Audience
Assumes real experience.
Trade press or conference
Googlebot errors in server logs may not be what they seem, according to Jori Ford, who explains what happens at the wire level to produce so-called ghost errors.
Independent practitioner
Charles Taylor picks over the Daily Mail's move from DailyMail.co.uk to DailyMail.com and what it meant for Google search traffic, as a worked migration case study.
Sells in this field
Vector search inside Postgres is handled by the pg_pinecone extension, which Jörg Schad of Pinecone describes, including how filtering undermines HNSW indexes and how a smaller index keeps memory use down.
Sells in this field
SEO split testing compares changed pages with similar pages left alone. seoClarity and SEOTesting.com share real results on title tags, meta descriptions, H1s and internal links, including losses.
Sells in this field
AI crawlers may see an empty page if a site relies on client-side rendering, since most do not run JavaScript. seoClarity experts go through the cost and how to close the gap.
Sells in this field
Mike King argues that search now works on meaning while many SEO tools still lean on BM25 and TF-IDF, and goes on to relevance engineering and fan-out queries.
Sells in this field
Fan-out queries are at the centre of Nik Ranger's AI visibility study for a travel platform, where seven million synthetic queries produced 110 Google citations and just 2 from ChatGPT.
Sells in this field
Krishna Madhavan traces the steps from a search query to an AI answer on Bing, including the index, annotation, fan-out queries and the engineering choices that affect which brands get named.
Sells in this field
Trust has replaced rank in AI visibility measurement, according to Kevin Indig, who presents a study of link metrics and a second one following 50 people across AI Mode and classic search.
Sells in this field
Dawn Anderson explains what the AI era changes for crawling, indexing and technical SEO, and argues RAG works from a web index rather than live data.
Sells in this field
Structured data does not need every schema type, says Jarno van Driel, who argues for clean HTML and good content and a clear sense of what markup is for.
Sells in this field
A site can rank well and still never be cited by AI, argues Nickolass Jensen, who works through a three-layer audit covering the human, search and AI layers.
Sells in this field
AI crawlers do not need full access to your content, says Arnout Hellemans, who suggests comparing rendered pages with raw HTML because many of these crawlers do not render yet.
Sells in this field
AI SEO claims get compared with a year of data from monitoring AI answers across several models and prompts, with Michal Suski and Steve Toth explaining why AI monitoring may be inaccurate.
Independent practitioner
What goes wrong when an enterprise site migration fails? Charles Taylor analyses the MSNBC move to MS Now and its effect on search visibility, including Google Publisher Center for Top Stories.
Trade press or conference
Why can crawlers see a page differently from users? Giacomo Zecchini explains rendering, style and layout, Googlebot's viewport expansion and implementation mismatches that hide content.
Teaching or conference talk
BM25 is a ranking formula for scoring how well documents match a query, and this video breaks down term frequency, document length, the k1 and b settings and a code demo.
Sells in this field
Ranking search results by more than text matches is the problem Algolia's team tackled with Multi-Signal Ranking, a learning-to-rank system that Zachary Nickerson explains, drawing on brand, price and stock signals.
Trade press or conference
Hreflang in XML sitemaps can work better than HTML tags in some cases, argues Nick Samuel, who weighs up both methods and gives tips on prioritising and troubleshooting.
Sells in this field
Log file analysis with AI and schema markup helped double organic search traffic, according to Matt Diggity, who tests both techniques here.
Independent practitioner
Crawled but not indexed does not always mean ignored, the speakers argue, as many such pages still get impressions; they compare Search Console data with server logs to find gaps in the reports.
Sells in this field
Internal linking on big websites is harder when thousands of pages are thin or duplicated, the speaker says, and links are what turn a bunch of pages into a connected site.
Sells in this field
Online casino SEO is the subject of a long interview with Peter Macinkovic, covering crawl budget, schema, user-generated content and how AI fits into daily work at Stake and Kick.
Sells in this field
Reranking models can improve the relevance of vector search results, and Pinecone and Cohere demonstrate this with Cohere's Rerank 3.5 on financial data.
Independent practitioner
Two case studies show SEO problems that only appear on mobile: canonical tags missing across more than 100,000 URLs, and thinner pages on a 40 million URL site, plus tools that spot both.
Sells in this field
How do you decide what counts as a good search result? A panel of search experts discusses ranking and relevance, and why the two are not the same thing.
Independent practitioner
Publishers that hijack the back button push visitors into a feed of more articles and ads, the speaker explains, and links the tactic to Navboost and Google's spam policies.
Sells in this field
Which Google ranking factors are real? Will Critchlow offers four testing ideas inspired by the API leaks, so you can check a claim yourself, from what testing is to a worked example.
Sells in this field
Programmatic SEO takes centre stage in Charles Floate's interview with Robert Niechcial, which also looks at indexing large sites, AI sites in other languages and the Polish SEO industry.
Sells in this field
Stevy Liakopoulou walks through six steps to optimise sitemaps for ecommerce sites with over a million pages, as guest host of a Moz whiteboard session.
Older: check current guidanceSells in this field
Crawl budget management through bot logs gets a JetOctopus webinar, covering how to block malicious bots and check log health, from load times to status codes.
Older: check current guidanceSells in this field
Hybrid search mixes keyword matching with vector-based retrieval, and this short Elastic guide explains how to judge it, including reciprocal rank fusion scoring and the unified API.
Older: check current guidanceSells in this field
Schema markup gets a long discussion from Jono Alderson, Bartosz Goralewicz and Tomek Rudzki, who explain why it clears up confusion about a site and how to put it in place properly.
Older: check current guidanceSells in this field
Elasticsearch and Lucene have gained a run of vector search upgrades, and Jim Ferenzi and Ben Trent walk through them, from multi-threading to RRF and filtered hybrid search, before looking ahead.
Older: check current guidanceTeaching or conference talk
TF-IDF has weaknesses, the presenter argues, and BM25 is built to answer them. The video lays out the problems first, then the BM25 formula.
Older: check current guidanceSells in this field
News SEO exposes a lot about how Google crawls, indexes and judges authority, argues Barry Adams, because Google must find and rank new articles quickly.
Older: check current guidanceTeaching or conference talk
The cost of JavaScript is highest on mobile and lower-end desktops, Addy Osmani explains, along with why small bundles help downloads.
Older: check current guidanceTeaching or conference talk
Basic PageRank gets stuck on spider traps and dead ends. This data mining lecture shows how teleportation gets round both, then builds up to the final algorithm.
Older: check current guidanceSells in this field
James Briggs and Sebastian Bruch from Pinecone host a workshop on sparse-dense embeddings, with SPLADE and BM25 examples and a discussion of how the two compare.
Older: check current guidanceTrade press or conference
Interaction to Next Paint, or INP, is a responsiveness metric, and Jeremy Wagner explains how delay after a click, tap or key press feeds into it.
Older: check current guidanceSells in this field
A technical SEO audit can show why a site lost traffic, and Olga Zarr gives seven tips for running one in depth, from spotting technical issues to suggesting quick fixes.
Older: check current guidanceTeaching or conference talk
How does a search engine build its index? This is the first of three parts on index construction from an ETH Zurich information retrieval course, spring 2022.
Older: check current guidanceSells in this field
Nils Reimers explains how Generative Pseudo-Labeling (GPL) can be used to train models for semantic search.
Older: check current guidanceTeaching or conference talk
PageRank, random walks and matrix factorisation are worked through in a Stanford lecture from Jure Leskovec, which treats graphs as matrices and builds towards node embeddings. Lecture 4.1 of the CS224W course.
Older: check current guidanceTeaching or conference talk
PageRank and HITS are two classic ways to score how important a web page is, and this lecture works through both, including the random surfer idea and Markov chains.
Older: check current guidanceSells in this field
Martin Splitt of Google joins Bartosz Goralewicz and Tomek Rudzki to talk rendering SEO, the future of technical optimisation and why SEO should look beyond JavaScript.
Older: check current guidanceSells in this field
Log file analysis for SEO gets a panel discussion, with three technical SEOs talking through what to look for in server logs, hosted by Jason Barnard.
Older: check current guidanceTeaching or conference talk
A Georgia Tech lecture works through PageRank with a small numbers example, first without teleportation and then with it, before moving to huge matrices and the personalised version.
Older: check current guidanceSells in this field
Image search gets a talk from Bill Slawski, who explains how Google might make sense of pictures and link queries to them, with suggestions for choosing meaningful images for content.
Older: check current guidanceTeaching or conference talk
An Imperial College London lecturer introduces PageRank through linear algebra, in week 5 of a Mathematics for Machine Learning course on Coursera.
Older: check current guidanceOfficial source
Martin Splitt looks inside the evergreen Googlebot and goes through rendering best practice and debugging steps for developers who want their content found in Search.
Older: check current guidanceSells in this field
Pages missing from Google's index are the problem here, with the speaker asking how much content goes unindexed, how SEOs should think about JavaScript websites, and presenting a new toolset.
Older: check current guidanceTrade press or conference
Hreflang is described as powerful but tricky. Ralf Ohlenbostel tells the story of how Zalando rolled it out across its international sites and which challenges came up.
Older: check current guidance
