Search Central LiveDeep Dive Europe 2026

Knowledge base v2.13.0 · Community edition · data through 2 October 2026

Area

AI and Search

How the AI features relate to classic Search, which AI systems already run inside it, how Gemini and AI agents use web content, and what that means for optimisation.

12 topics · 521 claims

Topics in this area 12

Across days 103

  1. Stage D2-C325 Day 2 · Understanding what's on a page

    Tokenization for AI models such as Gemini, in training and in inference, differs from tokenization for Search, although Gary Illyes qualified this with 'or mostly'.

    contradicts
    Slide D1-C039 Day 1 · How Search works and where's AI?

    Gemini is not part of Search, but it uses crawlers for data, shares some technologies such as tokenization and deduping, and grounds on the Search index.

  2. Analysis D2-C067 Day 2 · Controlling indexing

    nofollow is a link-graph hint for search engines, not an access control: to keep AI crawlers away from content, use robots.txt rules for the specific crawlers; at Google, Google-Extended covers Gemini training and grounding, and the Search generative AI control covers AI Overviews and AI Mode.

    extends
    Docs D1-C127 Day 1 · How Google thinks about crawl budget

    Google treats nofollow as a hint for crawling, not a block: nofollow links will generally not be followed, but the linked pages may still be crawled if Google finds them through sitemaps or other links. To stop Google fetching URLs on your own site, use a robots.txt disallow rule.

  3. Analysis D2-C067 Day 2 · Controlling indexing

    nofollow is a link-graph hint for search engines, not an access control: to keep AI crawlers away from content, use robots.txt rules for the specific crawlers; at Google, Google-Extended covers Gemini training and grounding, and the Search generative AI control covers AI Overviews and AI Mode.

    extends
    Stage D1-C482 Day 1 · Q&A

    Nearly all mainstream AI crawlers and AI systems use their own user agents, so robots.txt can set a separate policy for each; at the event OpenAI was said to have three or four, Anthropic a few and Microsoft some.

  4. Stage D2-C073 Day 2 · Controlling indexing

    John Mueller said Google uses the snippet as a way of building AI Overviews and AI Mode answers, so if a page forbids a snippet, Google cannot use that snippet for them.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  5. Docs D2-C074 Day 2 · Controlling indexing

    Google's AI features guide says a page must be indexed and eligible to be shown in Google Search with a snippet to appear as a supporting link in AI Overviews or AI Mode, with no additional technical requirements.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  6. Stage D2-C118 Day 2 · Lightning session D: Rendering and JavaScript

    To train Gemini models, Google renders every page just as it does for Search, so a page that renders correctly for Search also works for Gemini training, provided the site allows its content to be used for training.

    extends
    Slide D1-C039 Day 1 · How Search works and where's AI?

    Gemini is not part of Search, but it uses crawlers for data, shares some technologies such as tokenization and deduping, and grounds on the Search index.

  7. Stage D2-C120 Day 2 · Lightning session D: Rendering and JavaScript

    When a Gemini user asks about a specific web page (for example, whether it says anything about the ruby HTML tag), the page is read at that moment rather than during crawling and may be used to ground the answer, which takes extra time.

    extends
    Slide D1-C039 Day 1 · How Search works and where's AI?

    Gemini is not part of Search, but it uses crawlers for data, shares some technologies such as tokenization and deduping, and grounds on the Search index.

  8. Docs D2-C121 Day 2 · Lightning session D: Rendering and JavaScript

    Google's crawler documentation defines grounding in Gemini Apps and in Grounding with Google Search on Vertex AI as providing content from the Google Search index to the model at prompt time, and sites manage whether their content is used for it with the Google-Extended robots.txt token.

    extends
    Docs D1-C086 Day 1 · How Google interprets robots.txt

    Google-Extended is a control token, not a crawler with its own user agent string. It decides whether crawled content may be used to train future Gemini models and to ground Gemini apps and Vertex AI.

  9. Docs D2-C122 Day 2 · Lightning session D: Rendering and JavaScript

    Google says user-triggered fetchers, which fetch a URL because a user asked for it in a Google product (for example Gemini Notebook fetching URLs users add as sources, or Google-Agent acting on a user's request), generally ignore robots.txt rules.

    extends
    Stage D1-C434 Day 1 · Q&A

    User-initiated fetchers, such as a translation service fetching a page a user asked to translate, are a different category from crawlers and generally do not check robots.txt, because a user asked for the fetch.

  10. Stage D2-C124 Day 2 · Lightning session D: Rendering and JavaScript

    Google's simple solution for the extra time of live page reads is to make JavaScript-generated content render quickly and efficiently, or to use server-side rendering.

    extends
    Slide D1-C056 Day 1 · How Search works and where's AI?

    Myth: your website is no longer relevant. Google's answer: keep content crawlable, well structured, fast and easy to read, for readers and for AI tools.

  11. Stage D2-C134 Day 2 · Lightning session D: Rendering and JavaScript

    Google urged sites to make sure their JavaScript content can be crawled, rendered and indexed, calling this important today and also tomorrow, as AI systems increasingly ground answers to user requests.

    extends
    Slide D1-C056 Day 1 · How Search works and where's AI?

    Myth: your website is no longer relevant. Google's answer: keep content crawlable, well structured, fast and easy to read, for readers and for AI tools.

  12. Stage D2-C139 Day 2 · Lightning session D: Rendering and JavaScript

    A community speaker strongly advised putting everything you want cited into the raw, server-side rendered HTML, especially for AI systems that cannot render JavaScript yet.

    extends
    Slide D1-C056 Day 1 · How Search works and where's AI?

    Myth: your website is no longer relevant. Google's answer: keep content crawlable, well structured, fast and easy to read, for readers and for AI tools.

  13. Stage D2-C303 Day 2 · What is Google friendly JavaScript

    Combining schema-based interfaces with web standards such as WebMCP lets a site expose tools to AI agents, which can then operate the interfaces, for example to test them.

    extends
    Stage D1-C281 Day 1 · Lightning session A: Automation and AI

    A community speaker presented WebMCP (Web Model Context Protocol) as a way for a site to declare the actions it offers to AI agents, for example booking an appointment in a calendar, so an agent does not have to scrape the interface; the speaker called it faster, easier and cheaper.

  14. Stage D2-C330 Day 2 · Understanding what's on a page

    Gary Illyes said the common SEO advice to chunk content for AI systems is misunderstood: chunking is real, but it matters at the level of an AI model's context window.

    extends
    Slide D1-C054 Day 1 · How Search works and where's AI?

    Myth: optimise for AI over readers. Google's answer: optimise for people, with no need to obsess over precise keywords or AI phrasing, no need to chop content, and no need for llms.txt.

  15. Stage D2-C332 Day 2 · Understanding what's on a page

    Gemini does not need content cut into small chunks of 100 or 200 words, Gary Illyes said, since a smaller book fits in its context window.

    extends
    Slide D1-C054 Day 1 · How Search works and where's AI?

    Myth: optimise for AI over readers. Google's answer: optimise for people, with no need to obsess over precise keywords or AI phrasing, no need to chop content, and no need for llms.txt.

  16. Stage D2-C338 Day 2 · Understanding what's on a page

    Google detects soft 404s with a language model, described as something like BERT, that is trained to understand the structure and layout of a page as well as its language, instead of reading the page as one flat wall of text.

    extends
    Slide D1-C042 Day 1 · How Search works and where's AI?

    BERT is used in indexing to understand each word in the context of the whole sentence rather than one word at a time.

  17. Stage D2-C344 Day 2 · Handling web duplication

    Google deduplicates pages because many sites have very many pages and Google's index does not have room for everything.

    extends
    Slide D1-C037 Day 1 · How Search works and where's AI?

    For classic Search, crawling means Googlebot, scheduling and robots.txt, with AI used in parts such as scheduling. Indexing is one big but not limitless index that calculates signals and understands more than words, with AI such as BERT. Serving uses hundreds of signals tailored to the moment, with AI such as RankBrain.

  18. Stage D2-C377 Day 2 · Handling web duplication

    AI agents that browse the web for users run into the same bot walls that sites put up against scrapers, and may give up and go to another site, for example to buy the product elsewhere.

    extends
    Stage D1-C436 Day 1 · Q&A

    A Google panelist argued that it makes business sense for agents not to follow robots.txt: an agent sent to buy something that obeyed a robots.txt block could not complete the purchase, a bad experience for the user and lost revenue for the shop.

  19. Slide D2-C397 Day 2 · Handling web duplication

    Google's duplication talk closed with the advice not to block agents, which the speaker said are sometimes really cool.

    extends
    Docs D1-C131 Day 1 · session not recorded

    Google's guide for generative AI features says browser agents may read a site through screenshots, the DOM structure and the accessibility tree, and recommends semantic HTML because it helps users such as screen reader users navigate a page.

  20. Docs D2-C462 Day 2 · What is Structured Data and why we need it on the internet.

    Google's guidance on generative AI content warns that AI output can contain hallucinations and says AI-generated metadata, including structured data and image alt text, should be fact-checked before publishing and the markup validated.

    extends
    Stage D1-C250 Day 1 · Lightning session A: Automation and AI

    In a community demo, a fix loop gave a large LLM (Claude Opus) the current markup, the errors Google's test reported and Google's documentation, had it write new JSON-LD and re-ran the test, with at most three attempts; the demo's page passed on the second.

  21. Stage D2-C465 Day 2 · What is Structured Data and why we need it on the internet.

    Gemini in Chrome relies heavily on the screenshot it takes of a page.

    extends
    Docs D1-C131 Day 1 · session not recorded

    Google's guide for generative AI features says browser agents may read a site through screenshots, the DOM structure and the accessibility tree, and recommends semantic HTML because it helps users such as screen reader users navigate a page.

  22. Stage D2-C476 Day 2 · What is Structured Data and why we need it on the internet.

    The structured data Google processes is not fed very differently to AI Overviews and AI Mode: after cleaning and quality work, the same data goes to both the classic results page and the AI features.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  23. Stage D2-C477 Day 2 · What is Structured Data and why we need it on the internet.

    As far as the speaker knows, in most of Google's main AI uses a page's schema.org markup is not turned into text and put directly into the model's context; the data is first sorted out, checked for quality and indexed before it is passed on as grounding context.

    extends
    Docs D1-C061 Day 1 · How Search works and where's AI?

    Google's guide says new machine-readable files, AI text files or special markup are not needed to appear in Search, and that such files neither harm nor help visibility because Google Search ignores them.

  24. Docs D2-C480 Day 2 · What is Structured Data and why we need it on the internet.

    Google's guide to optimizing for generative AI features lists 'overfocusing on structured data' among the things site owners don't need to do: structured data is not required for generative AI search and no special schema.org markup is needed, though it remains worth using because it helps pages become eligible for rich results.

    extends
    Docs D1-C061 Day 1 · How Search works and where's AI?

    Google's guide says new machine-readable files, AI text files or special markup are not needed to appear in Search, and that such files neither harm nor help visibility because Google Search ignores them.

  25. Stage D2-C603 Day 2 · Focusing on Internationalisation and Localisation

    Users often assume AI is all-knowing and borderless, but AI is still language-dependent: if an AI answer is synthesized from the top results, a query in another language draws on a totally different set of data.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  26. Analysis D2-C607 Day 2 · Focusing on Internationalisation and Localisation

    Check AI Overviews and AI Mode with native-language queries in each target market, not with translated English keywords, and compare with the country breakdown of Search Console's generative AI performance report; topics where competitors are cited and you are not point to missing or weak local content.

    extends
    Docs D1-C124 Day 1 · How Search works and where's AI?

    Google's launch post for the Generative AI performance reports in Search Console (3 June 2026; rolled out to all sites worldwide by 31 August 2026) lists impressions, pages, countries, devices (Search only) and dates, and no click or query metrics.

  27. Analysis D2-C612 Day 2 · Focusing on Internationalisation and Localisation

    Treat machine translation as a first draft: have a native speaker review it and adapt dates, calendars and units before publishing, because unreviewed bulk translation that adds little value can also fall under Google's scaled content abuse policy.

    extends
    Analysis D1-C048 Day 1 · How Search works and where's AI?

    The answer is not a claim that Google detects AI text. It says ranking favours text that reads as natural to people. The risk with AI content is scale without value, which falls under Google's scaled content abuse policy, not the tool itself.

  28. Stage D2-C648 Day 2 · Calculating (some) signals

    Among the many signals Google calculates during indexing, the ones singled out as having large effects on search results were country, language, freshness, SafeSearch and spam.

    extends
    Slide D1-C037 Day 1 · How Search works and where's AI?

    For classic Search, crawling means Googlebot, scheduling and robots.txt, with AI used in parts such as scheduling. Indexing is one big but not limitless index that calculates signals and understands more than words, with AI such as BERT. Serving uses hundreds of signals tailored to the moment, with AI such as RankBrain.

  29. Stage D2-C668 Day 2 · Calculating (some) signals

    Google uses more and more AI to detect spam, and Google's testing shows that this AI-based detection is highly accurate.

    extends
    Slide D1-C041 Day 1 · How Search works and where's AI?

    Statistical models have been used at Google for over 20 years, for catching spam and originally for the 'Did you mean' feature.

  30. Stage D2-C669 Day 2 · Calculating (some) signals

    SpamBrain, Google's AI-based spam detection system, is nowadays built on Gemini and fine-tuned specifically for finding spam.

    extends
    Slide D1-C039 Day 1 · How Search works and where's AI?

    Gemini is not part of Search, but it uses crawlers for data, shares some technologies such as tokenization and deduping, and grounds on the Search index.

  31. Stage D2-C669 Day 2 · Calculating (some) signals

    SpamBrain, Google's AI-based spam detection system, is nowadays built on Gemini and fine-tuned specifically for finding spam.

    extends
    Slide D1-C041 Day 1 · How Search works and where's AI?

    Statistical models have been used at Google for over 20 years, for catching spam and originally for the 'Did you mean' feature.

  32. Stage D2-C684 Day 2 · Deciding what goes in the index?

    Index selection is a predictive AI system that relies heavily on machine learning.

    extends
    Slide D1-C037 Day 1 · How Search works and where's AI?

    For classic Search, crawling means Googlebot, scheduling and robots.txt, with AI used in parts such as scheduling. Indexing is one big but not limitless index that calculates signals and understands more than words, with AI such as BERT. Serving uses hundreds of signals tailored to the moment, with AI such as RankBrain.

  33. Stage D2-C695 Day 2 · Deciding what goes in the index?

    Page quality is ultimately what decides whether a document is indexed, so focusing on quality is the most reliable way to get pages into Google's index.

    extends
    Slide D1-C093 Day 1 · How Google thinks about crawl budget

    Crawl demand is driven by the quality of the site, the change frequency of its URLs and their popularity on the internet.

  34. Stage D2-C714 Day 2 · Deciding what goes in the index?

    'Crawled – currently not indexed' is most of the time a quality issue rather than a technical one: the pages are usually low quality or useless for the index, for example duplicates or soft 404s.

    extends
    Analysis D1-C098 Day 1 · How Google thinks about crawl budget

    On smaller sites, slow indexing is almost always a demand problem, meaning quality, not a capacity problem.

  35. Analysis D2-C716 Day 2 · Deciding what goes in the index?

    Treat 'Crawled – currently not indexed' as a quality audit list: compare those URLs with indexed pages of the same type for thin, duplicate or soft-404-like content and for template differences before looking for technical faults.

    extends
    Analysis D1-C098 Day 1 · How Google thinks about crawl budget

    On smaller sites, slow indexing is almost always a demand problem, meaning quality, not a capacity problem.

  36. Stage D2-C722 Day 2 · How does the index look like?

    Each document in Google's index has pretty much all the signals calculated for it attached, for example quality signals plus the page's country and language, according to an illustration the speaker called an approximation of the real structure.

    extends
    Slide D1-C037 Day 1 · How Search works and where's AI?

    For classic Search, crawling means Googlebot, scheduling and robots.txt, with AI used in parts such as scheduling. Indexing is one big but not limitless index that calculates signals and understands more than words, with AI such as BERT. Serving uses hundreds of signals tailored to the moment, with AI such as RankBrain.

  37. Stage D2-C726 Day 2 · How does the index look like?

    AI Overviews and AI Mode use the same index structures and token-based snippets as classic web results, a point Google called important but not obvious.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  38. Stage D2-C727 Day 2 · How does the index look like?

    Google said that when AI Overviews or AI Mode run a query fan-out, the generated queries are sent to Google's Search index and documents come back with their snippets, which then feed the AI-generated answer (part of this passage is unclear in the recording).

    extends
    Slide D1-C051 Day 1 · How Search works and where's AI?

    Three reasons were given: generative AI features are built directly on the core ranking systems, query fan-out expands the original query to find related information, and generative AI features highlight content indexed by Google Search.

  39. Stage D2-C727 Day 2 · How does the index look like?

    Google said that when AI Overviews or AI Mode run a query fan-out, the generated queries are sent to Google's Search index and documents come back with their snippets, which then feed the AI-generated answer (part of this passage is unclear in the recording).

    extends
    Docs D1-C053 Day 1 · How Search works and where's AI?

    Query fan-out means running several related searches at once to gather more results; a question about lawn weeds may also search herbicides and weed prevention.

  40. Stage D2-C727 Day 2 · How does the index look like?

    Google said that when AI Overviews or AI Mode run a query fan-out, the generated queries are sent to Google's Search index and documents come back with their snippets, which then feed the AI-generated answer (part of this passage is unclear in the recording).

    extends
    Stage D1-C172 Day 1 · Welcome and opening keynotes

    Google said the Gemini model lets Search understand the user's intent, and query fan-out then adds further queries to the first one to enrich the quality of the answer.

  41. Docs D2-C729 Day 2 · How does the index look like?

    Google says query fan-out in AI Overviews and AI Mode issues related searches across subtopics and several data sources, which for AI Mode include the Knowledge Graph and shopping data as well as web content (AI Mode launch post, March 2025).

    extends
    Docs D1-C053 Day 1 · How Search works and where's AI?

    Query fan-out means running several related searches at once to gather more results; a question about lawn weeds may also search herbicides and weed prevention.

  42. Stage D2-C741 Day 2 · How does the index look like?

    In embedding-based retrieval, the distance between the embeddings of documents and the embedding of the user's query decides which documents are returned.

    extends
    Docs D1-C129 Day 1 · How Search works and where's AI?

    Google's guide says creating separate content for every variation of how people might search, including fan-out queries, primarily to manipulate rankings or AI responses violates its scaled content abuse policy. It adds that its AI systems can understand a page's relevance even without an exact match to the query.

  43. Stage D2-C770 Day 2 · Google Trends

    Google attributed the September 2025 surge in worldwide search interest for Gemini to the viral launch of Nano Banana (the image editing model in the Gemini app), as people searched for both Gemini and Nano Banana.

    extends
    Stage D1-C162 Day 1 · Welcome and opening keynotes

    Google said that after the launch of Nano Banana, its image generation model, the Gemini app became the number one app in the app store in 2025.

  44. Slide D3-C057 Day 3 · Making sense of users' queries

    Google's slide on how LLM features with grounding generally work showed a query going to both the search engine and an LLM, the search engine's results going to the LLM, the LLM generating fan-out queries that go back to the search engine, and the LLM returning answers with links.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  45. Stage D3-C059 Day 3 · Making sense of users' queries

    Google treats fan-out queries generated by the LLM the same way as queries typed by users, so understanding how normal queries work explains fan-out queries too.

    extends
    Stage D1-C172 Day 1 · Welcome and opening keynotes

    Google said the Gemini model lets Search understand the user's intent, and query fan-out then adds further queries to the first one to enrich the quality of the answer.

  46. Stage D3-C059 Day 3 · Making sense of users' queries

    Google treats fan-out queries generated by the LLM the same way as queries typed by users, so understanding how normal queries work explains fan-out queries too.

    extends
    Stage D2-C727 Day 2 · How does the index look like?

    Google said that when AI Overviews or AI Mode run a query fan-out, the generated queries are sent to Google's Search index and documents come back with their snippets, which then feed the AI-generated answer (part of this passage is unclear in the recording).

  47. Stage D3-C061 Day 3 · Making sense of users' queries

    Google tries to make fan-out queries distinct from each other for better coverage, avoiding asking the same question several times, which would return the same answers.

    extends
    Stage D1-C225 Day 1 · How Search works and where's AI?

    Google said query fan-out is nothing new: it fires, for example, ten different searches in the background, each a normal search on the same systems.

  48. Stage D3-C061 Day 3 · Making sense of users' queries

    Google tries to make fan-out queries distinct from each other for better coverage, avoiding asking the same question several times, which would return the same answers.

    extends
    Docs D2-C729 Day 2 · How does the index look like?

    Google says query fan-out in AI Overviews and AI Mode issues related searches across subtopics and several data sources, which for AI Mode include the Knowledge Graph and shopping data as well as web content (AI Mode launch post, March 2025).

  49. Stage D3-C063 Day 3 · Making sense of users' queries

    Google said fan-out queries are not added to Search Console, because Google considers them part of its infrastructure.

    extends
    Docs D1-C124 Day 1 · How Search works and where's AI?

    Google's launch post for the Generative AI performance reports in Search Console (3 June 2026; rolled out to all sites worldwide by 31 August 2026) lists impressions, pages, countries, devices (Search only) and dates, and no click or query metrics.

  50. Stage D3-C065 Day 3 · Making sense of users' queries

    Because every system runs fan-out differently, Google advised understanding that fan-out happens but not overfocusing on individual fan-out queries or on how to rank for them.

    extends
    Docs D1-C129 Day 1 · How Search works and where's AI?

    Google's guide says creating separate content for every variation of how people might search, including fan-out queries, primarily to manipulate rankings or AI responses violates its scaled content abuse policy. It adds that its AI systems can understand a page's relevance even without an exact match to the query.

  51. Stage D3-C077 Day 3 · Making sense of users' queries

    The first condition for retrieving a document is that the query's words, or its concepts in the case of vectors or embeddings, are in the document or related to it.

    extends
    Stage D2-C740 Day 2 · How does the index look like?

    Besides posting lists, Google can retrieve documents through vector embeddings: parts of documents are associated with embeddings, which form a vector space used for retrieval.

  52. Stage D3-C104 Day 3 · Lightning session K: Facets of quality

    To choose what to cover in depth, a community speaker's team used Google Trends to find what people in their market were interested in and then gave them that content.

    extends
    Stage D2-C789 Day 2 · Google Trends

    Google presented three uses of Google Trends for content creation, marketing and SEO: keyword selection, scheduling and ideation.

  53. Analysis D3-C135 Day 3 · How Google thinks about Quality

    The quality talk's slide listed MUM among Google's ranking systems, while Google's ranking systems guide says MUM is not currently used for general ranking in Search; read the slide as a list of systems Google runs, not as proof that each one ranks every query.

    extends
    Docs D1-C130 Day 1 · How Search works and where's AI?

    Google's ranking systems guide says MUM is not currently used for general ranking in Search, only for specific applications such as COVID-19 vaccine searches and featured snippet callouts.

  54. Stage D3-C170 Day 3 · How Google thinks about Quality

    Google's quality talk pointed to page 21 of the Search Quality Rater Guidelines for its definition of content quality by effort, originality, talent or skill and accuracy, noting that the document is updated from time to time.

    extends
    Stage D2-C311 Day 2 · Understanding what's on a page

    Gary Illyes pointed to Google's Search Quality Rater Guidelines as the detailed source on how Google thinks about the main content of a page.

  55. Stage D3-C179 Day 3 · How Google thinks about Quality

    Google's quality talk said non-commodity content offers a unique, experienced take, and advised writing content that readers will find very helpful and reliable.

    extends
    Slide D1-C055 Day 1 · How Search works and where's AI?

    Myth: build content for every possible consumer need. Google's answer: prioritise unique perspectives, expertise and in-depth experience that go beyond common knowledge.

  56. Stage D3-C205 Day 3 · How Google thinks about Quality

    Google's quality talk said AI has fundamentally changed how Google builds spam updates, letting it evaluate many more candidates and drastically increasing its velocity, so it launches faster with more impact.

    extends
    Stage D2-C668 Day 2 · Calculating (some) signals

    Google uses more and more AI to detect spam, and Google's testing shows that this AI-based detection is highly accurate.

  57. Stage D3-C206 Day 3 · How Google thinks about Quality

    Google's quality talk said AI lets Google catch new types of spam and catch more of it.

    extends
    Stage D2-C668 Day 2 · Calculating (some) signals

    Google uses more and more AI to detect spam, and Google's testing shows that this AI-based detection is highly accurate.

  58. Stage D3-C212 Day 3 · How Google thinks about Quality

    Google's quality talk said Google clarified that traditional spam techniques aimed at manipulating AI responses also violate its spam policies, and that Google can take action against them.

    extends
    Docs D1-C129 Day 1 · How Search works and where's AI?

    Google's guide says creating separate content for every variation of how people might search, including fan-out queries, primarily to manipulate rankings or AI responses violates its scaled content abuse policy. It adds that its AI systems can understand a page's relevance even without an exact match to the query.

  59. Stage D3-C311 Day 3 · How Search results are born

    Google handles an image used as a search query much like a text query interpreted as an embedding: the image is broken down into vectors (embeddings) that are then searched for in the index.

    extends
    Stage D2-C740 Day 2 · How does the index look like?

    Besides posting lists, Google can retrieve documents through vector embeddings: parts of documents are associated with embeddings, which form a vector space used for retrieval.

  60. Stage D3-C325 Day 3 · How Search results are born

    AI Mode and AI Overviews are not rich results but standard search features: they need no structured data to function and work with the normal text results from Google's index.

    extends
    Stage D2-C726 Day 2 · How does the index look like?

    AI Overviews and AI Mode use the same index structures and token-based snippets as classic web results, a point Google called important but not obvious.

  61. Stage D3-C440 Day 3 · Inside Search Console: What’s New & How to Use It

    Google called AI reporting in Search Console an evolving space and expects the generative AI report to get richer, with more information in the future.

    extends
    Stage D1-C449 Day 1 · Q&A

    A Google panelist said he expected more AI reporting to launch in Search Console, without a timeline or a promise, because many people at Google care about giving site owners the information to understand and adapt to what happens in Search.

  62. Stage D3-C442 Day 3 · Inside Search Console: What’s New & How to Use It

    Search Console launched platform properties, which bring social platforms into Search Console, about three or four months before the October 2026 event.

    extends
    Stage D2-C960 Day 2 · Lightning session F: Media

    A community speaker said publishers can also verify their social accounts in Search Console, which makes it easier to track the performance of content repurposed for social platforms.

  63. Docs D3-C468 Day 3 · Inside Search Console: What’s New & How to Use It

    Google's social and video performance guide says that if you already claimed your Search profile, all of its verified accounts are added automatically as platform properties in Search Console.

    extends
    Stage D2-C960 Day 2 · Lightning session F: Media

    A community speaker said publishers can also verify their social accounts in Search Console, which makes it easier to track the performance of content repurposed for social platforms.

  64. Stage D3-C469 Day 3 · Lightning session L: Understanding SERPs and your users

    In a community lightning talk, agency founder Nik Vujic presented how his agency feeds Search Console and GA4 data to an LLM agent to support decisions for its clients.

    extends
    Stage D1-C255 Day 1 · Lightning session A: Automation and AI

    A community speaker who is not a developer automated monthly SEO reports with Python in Visual Studio Code, using Claude and ChatGPT as coding partners and Google Cloud for access to the Search Console API.

  65. Slide D3-C477 Day 3 · Lightning session L: Understanding SERPs and your users

    The community workflow's third step feeds the exported Search Console dataset into the agency's LLM agent, which queries the dataset and returns the evidence rather than a sample.

    extends
    Stage D1-C256 Day 1 · Lightning session A: Automation and AI

    An agency's automated monthly SEO report follows four simple steps: the data comes in, a script processes it, AI summarises it and the result goes onto a dashboard.

  66. Slide D3-C478 Day 3 · Lightning session L: Understanding SERPs and your users

    Nik Vujic's slide said no agent is needed to start: pull the Search Console data, import it into any LLM and query it in conversation; his agency built its agent to have everything in one place.

    extends
    Stage D1-C256 Day 1 · Lightning session A: Automation and AI

    An agency's automated monthly SEO report follows four simple steps: the data comes in, a script processes it, AI summarises it and the result goes onto a dashboard.

  67. Analysis D3-C487 Day 3 · Lightning session L: Understanding SERPs and your users

    Google's ranking systems guide describes 'query deserves freshness' systems that show fresher content where it would be expected, which is narrower than a general preference for fresh content; refresh pages whose queries expect current information, and judge other refreshes by quality.

    extends
    Stage D2-C656 Day 2 · Calculating (some) signals

    Freshness is a signal for queries that deserve fresh results ('query deserves freshness'): when a breaking event hits a city, such as possible closure of Barcelona's airport, users want really fresh results, not results from two weeks ago.

  68. Stage D3-C495 Day 3 · Lightning session L: Understanding SERPs and your users

    Nik Vujic said he hopes Search Console's generative AI report will get query data.

    extends
    Docs D1-C124 Day 1 · How Search works and where's AI?

    Google's launch post for the Generative AI performance reports in Search Console (3 June 2026; rolled out to all sites worldwide by 31 August 2026) lists impressions, pages, countries, devices (Search only) and dates, and no click or query metrics.

  69. Analysis D3-C497 Day 3 · Lightning session L: Understanding SERPs and your users

    Pages that do better in AI answers than in classic results do not refute Google's line that optimising for people is optimising for generative AI Search, since the comparison mixed Google's AI features with third-party LLMs; measure each surface separately, per page, before deciding what to change.

    extends
    Slide D1-C058 Day 1 · How Search works and where's AI?

    Optimising for people is optimising for generative AI Search.

  70. Stage D3-C518 Day 3 · Lightning session L: Understanding SERPs and your users

    A community speaker concluded that rankings and clicks no longer equal real business outcomes.

    extends
    Slide D1-C057 Day 1 · How Search works and where's AI?

    Myth: the old metrics don't work in the AI era. Google's answer: measure success through metrics that matter to your business.

  71. Docs D3-C535 Day 3 · Lightning session L: Understanding SERPs and your users

    Beyond Search Console, Google's AI features guide suggests tracking conversions and time spent on the site in tools such as Google Analytics to understand the value of traffic from AI features.

    extends
    Docs D1-C062 Day 1 · How Search works and where's AI?

    Google's guide for generative AI features recommends the Generative AI performance report in Search Console for measuring how content performs in generative AI features on Google Search and Discover.

  72. Docs D3-C536 Day 3 · Lightning session L: Understanding SERPs and your users

    A May 2025 Search Central blog post advised site owners to look at the overall value of visits from Search rather than focusing too much on clicks, using indicators of conversion such as sales, sign-ups, a more engaged audience or information lookups about the business.

    extends
    Slide D1-C057 Day 1 · How Search works and where's AI?

    Myth: the old metrics don't work in the AI era. Google's answer: measure success through metrics that matter to your business.

  73. Analysis D3-C542 Day 3 · Lightning session L: Understanding SERPs and your users

    Google's own line on Day 1 was to measure success by metrics that matter to the business, and its Generative AI performance report shows impressions but no clicks; together with the community talk this argues for a report that puts organic next to direct, branded paid search, conversions and revenue.

    extends
    Slide D1-C057 Day 1 · How Search works and where's AI?

    Myth: the old metrics don't work in the AI era. Google's answer: measure success through metrics that matter to your business.

  74. Analysis D3-C542 Day 3 · Lightning session L: Understanding SERPs and your users

    Google's own line on Day 1 was to measure success by metrics that matter to the business, and its Generative AI performance report shows impressions but no clicks; together with the community talk this argues for a report that puts organic next to direct, branded paid search, conversions and revenue.

    extends
    Docs D1-C124 Day 1 · How Search works and where's AI?

    Google's launch post for the Generative AI performance reports in Search Console (3 June 2026; rolled out to all sites worldwide by 31 August 2026) lists impressions, pages, countries, devices (Search only) and dates, and no click or query metrics.

  75. Stage D3-C680 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Gary Illyes said machine learning is about 50 years old and that Google has been using it for 'probably 30 years', starting with statistical models that made the 'Did you mean' feature possible.

    extends
    Slide D1-C041 Day 1 · How Search works and where's AI?

    Statistical models have been used at Google for over 20 years, for catching spam and originally for the 'Did you mean' feature.

  76. Stage D3-C684 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Predictive language models have been used a lot in Search, and BERT is one: technically, in the purest sense, an LLM.

    extends
    Slide D1-C042 Day 1 · How Search works and where's AI?

    BERT is used in indexing to understand each word in the context of the whole sentence rather than one word at a time.

  77. Stage D3-C686 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Hallucinations can happen with any AI model, and with current training methods there is no way to get rid of them.

    extends
    Docs D2-C462 Day 2 · What is Structured Data and why we need it on the internet.

    Google's guidance on generative AI content warns that AI output can contain hallucinations and says AI-generated metadata, including structured data and image alt text, should be fact-checked before publishing and the markup validated.

  78. Stage D3-C688 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Generative models, including image diffusion models, make things up when they lack information or because of issues in their training.

    extends
    Stage D2-C939 Day 2 · Using images to your advantage and Engaging Search users with videos

    The diffusion models that generate images were built to generate images, not text, so they are typically poor at rendering text inside an image.

  79. Stage D3-C695 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    The cheaper tokens become, the more AI slop is created, and Google counts AI slop as scaled content abuse.

    extends
    Docs D2-C611 Day 2 · Focusing on Internationalisation and Localisation

    Google's spam policies define scaled content abuse as generating many pages mainly to manipulate rankings, with little or no value to users, no matter how they are created, and list automated translating of scraped content among the examples.

  80. Stage D3-C697 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Google's Search Quality Rater Guidelines point out that the tool used to create content is not the problem, but how it was used and what for.

    extends
    Docs D2-C611 Day 2 · Focusing on Internationalisation and Localisation

    Google's spam policies define scaled content abuse as generating many pages mainly to manipulate rankings, with little or no value to users, no matter how they are created, and list automated translating of scraped content among the examples.

  81. Slide D3-C700 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Google's closing slide said to use AI responsibly because AI hallucinates, and, especially when creating content briefs with AI, to make sure not to add to the sea of AI slop already flooding the internet.

    extends
    Stage D2-C941 Day 2 · Using images to your advantage and Engaging Search users with videos

    Sites that use AI-generated images or videos should make sure they work for users, check them for hallucinations and regenerate them where needed.

  82. Slide D3-C701 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Google's closing slide said AI on Google is just SEO: AI features on Google Search use exactly the same processes as traditional results, so no new acronym is needed, as none was for mobile-first indexing or structured data.

    extends
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  83. Stage D2-C116 Day 2 · Lightning session D: Rendering and JavaScript

    AI Overviews and AI Mode are built on top of Search results: they are a different experience of the same content Google already has.

    repeats
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  84. Docs D2-C122 Day 2 · Lightning session D: Rendering and JavaScript

    Google says user-triggered fetchers, which fetch a URL because a user asked for it in a Google product (for example Gemini Notebook fetching URLs users add as sources, or Google-Agent acting on a user's request), generally ignore robots.txt rules.

    repeats
    Stage D1-C273 Day 1 · Lightning session A: Automation and AI

    A community speaker pointed out that, according to Google's documentation, user-triggered fetchers, which fetch a page because a user asked for it, generally ignore robots.txt rules.

  85. Stage D2-C601 Day 2 · Focusing on Internationalisation and Localisation

    Sites need no extra work to appear in AI Overviews and AI Mode: both work on top of the existing web results, so what works for web results also works for the AI features.

    repeats
    Slide D1-C050 Day 1 · How Search works and where's AI?

    Google's answer to 'SEO is dead, long live GEO' is not to worry about the name: good SEO is good GEO and AEO.

  86. Stage D2-C601 Day 2 · Focusing on Internationalisation and Localisation

    Sites need no extra work to appear in AI Overviews and AI Mode: both work on top of the existing web results, so what works for web results also works for the AI features.

    repeats
    Slide D1-C051 Day 1 · How Search works and where's AI?

    Three reasons were given: generative AI features are built directly on the core ranking systems, query fan-out expands the original query to find related information, and generative AI features highlight content indexed by Google Search.

  87. Stage D2-C679 Day 2 · Calculating (some) signals

    Combing Google's documentation for signals is not the best use of an SEO's time; creating content that users will like is a better one.

    repeats
    Stage D1-C059 Day 1 · Welcome and opening keynotes

    The opening keynote closed with the advice to think about UEO, user engine optimisation, next to SEO and GEO: focus on the user and the rest will follow.

  88. Stage D2-C680 Day 2 · Deciding what goes in the index?

    Google's index is immense but finite, so Google cannot index every URL it finds on a web with a practically infinite number of URLs.

    repeats
    Slide D1-C037 Day 1 · How Search works and where's AI?

    For classic Search, crawling means Googlebot, scheduling and robots.txt, with AI used in parts such as scheduling. Indexing is one big but not limitless index that calculates signals and understands more than words, with AI such as BERT. Serving uses hundreds of signals tailored to the moment, with AI such as RankBrain.

  89. Stage D3-C056 Day 3 · Making sense of users' queries

    Google's generative AI features in Search build on the traditional ways of searching, so query understanding also flows into AI Overviews and AI Mode.

    repeats
    Slide D1-C051 Day 1 · How Search works and where's AI?

    Three reasons were given: generative AI features are built directly on the core ranking systems, query fan-out expands the original query to find related information, and generative AI features highlight content indexed by Google Search.

  90. Stage D3-C058 Day 3 · Making sense of users' queries

    In Google's AI features, the query and the search results are additionally sent to an LLM, which returns new queries for Google to run.

    repeats
    Docs D1-C053 Day 1 · How Search works and where's AI?

    Query fan-out means running several related searches at once to gather more results; a question about lawn weeds may also search herbicides and weed prevention.

  91. Stage D3-C116 Day 3 · Lightning session K: Facets of quality

    Google's long-standing advice to write for people and give them what they want has become true in practice because Googlebot has become more and more human, a community speaker argued.

    repeats
    Slide D1-C047 Day 1 · How Search works and where's AI?

    Google's answer was that ML-based ranking systems are trained on content written by humans for humans, so they understand and promote natural content better.

  92. Stage D3-C129 Day 3 · Lightning session K: Facets of quality

    If you cannot say what problems your pages solve for users, or the answer is 'it depends', you are optimising for the search engine rather than for people, and that will not work for long, a community speaker warned.

    repeats
    Slide D1-C013 Day 1 · Welcome and opening keynotes

    Ecosystem principle 4, incentivise high-quality content: content made for Search will not be successful.

  93. Stage D3-C190 Day 3 · How Google thinks about Quality

    Google's quality talk said quality problems should be treated as quality issues, not as AI versus human content, because a lot of good AI-assisted or AI-written content exists.

    repeats
    Stage D1-C210 Day 1 · How Search works and where's AI?

    Google said it is not really trying to tell AI-written from human-written content, because it cares more about the quality of content than about how it was created.

  94. Analysis D3-C435 Day 3 · Inside Search Console: What’s New & How to Use It

    Review the filters and regexes that Search Console's AI-powered configuration proposes before trusting the numbers: Google's launch post calls the feature experimental, warns that AI can misinterpret requests, and limits it to the Search results Performance report (not Discover or News) and to configuration, not sorting or exporting.

    repeats
    Stage D1-C243 Day 1 · Lightning session A: Automation and AI

    The first rule for using LLMs on search data, according to a community speaker, is never to let the model check its own output.

  95. Stage D3-C437 Day 3 · Inside Search Console: What’s New & How to Use It

    Search Console added reporting of the impressions a site's content gets in the AI surfaces of Google Search, found in the left navigation nested under Search results.

    repeats
    Docs D1-C124 Day 1 · How Search works and where's AI?

    Google's launch post for the Generative AI performance reports in Search Console (3 June 2026; rolled out to all sites worldwide by 31 August 2026) lists impressions, pages, countries, devices (Search only) and dates, and no click or query metrics.

  96. Stage D3-C439 Day 3 · Inside Search Console: What’s New & How to Use It

    Search Console's generative AI report shows impressions broken down by pages, countries and devices.

    repeats
    Docs D1-C124 Day 1 · How Search works and where's AI?

    Google's launch post for the Generative AI performance reports in Search Console (3 June 2026; rolled out to all sites worldwide by 31 August 2026) lists impressions, pages, countries, devices (Search only) and dates, and no click or query metrics.

  97. Stage D3-C440 Day 3 · Inside Search Console: What’s New & How to Use It

    Google called AI reporting in Search Console an evolving space and expects the generative AI report to get richer, with more information in the future.

    repeats
    Stage D1-C196 Day 1 · What's new in the world of Search

    Google said Search Console's generative AI reporting launched alongside the generative AI control, starting with impressions only, and may expand later.

  98. Slide D3-C586 Day 3 · Mastering the messy middle

    Google's marketing research talk reached the same advice as Search: optimise for people to win in generative AI search.

    repeats
    Slide D1-C058 Day 1 · How Search works and where's AI?

    Optimising for people is optimising for generative AI Search.

  99. Slide D3-C588 Day 3 · Mastering the messy middle

    Google's slide advised producing unique, helpful, human-centric content.

    repeats
    Slide D1-C055 Day 1 · How Search works and where's AI?

    Myth: build content for every possible consumer need. Google's answer: prioritise unique perspectives, expertise and in-depth experience that go beyond common knowledge.

  100. Stage D3-C680 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Gary Illyes said machine learning is about 50 years old and that Google has been using it for 'probably 30 years', starting with statistical models that made the 'Did you mean' feature possible.

    repeats
    Stage D1-C209 Day 1 · How Search works and where's AI?

    Google launched the 'Did you mean' feature around 2001-2002 using a statistical model, which Gary Illyes counted as AI because it is a form of machine learning.

  101. Slide D3-C701 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    Google's closing slide said AI on Google is just SEO: AI features on Google Search use exactly the same processes as traditional results, so no new acronym is needed, as none was for mobile-first indexing or structured data.

    repeats
    Slide D1-C050 Day 1 · How Search works and where's AI?

    Google's answer to 'SEO is dead, long live GEO' is not to worry about the name: good SEO is good GEO and AEO.

  102. Stage D3-C702 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    AI Overviews and AI Mode are built on the Search infrastructure Google has used for 25 to 30 years and have very few processes of their own.

    repeats
    Slide D1-C038 Day 1 · How Search works and where's AI?

    AI Mode and AI Overviews use the same crawling and the same index as Search. At serving they add grounding on the Search index and query fan-out.

  103. Stage D3-C702 Day 3 · Wrapping all up: AI, Search, and making sense of everything.

    AI Overviews and AI Mode are built on the Search infrastructure Google has used for 25 to 30 years and have very few processes of their own.

    repeats
    Stage D2-C726 Day 2 · How does the index look like?

    AI Overviews and AI Mode use the same index structures and token-based snippets as classic web results, a point Google called important but not obvious.