Summary of 13 official Google case studies by topic: 5 Job postings cases (Eventbrite/Jobrapido/Monster/ZipRecruiter/Saramin) + 4 Video SEO cases (Vimeo/MX/Vidio/cross-regional including Weather/Italiaonline/ABP) + 1 Recipe case (Rakuten) + 1 Discover large image case (Kirbie/Istoé) + 1 CMS integration case (Wix) + shared patterns. **These are best-case outcomes and cannot be expected to scale proportionally**, but they demonstrate the value of SD, tool combinations, iframe embedding solutions (indexifembedded), and the Wix CMS implementation path
Structured Data framework + overview of all 34 Google-supported rich result types. Format selection for the 3 syntaxes (JSON-LD recommended / Microdata / RDFa; data-vocabulary.org is deprecated). **6 quality guidelines** (content / relevance / completeness / location / specificity / images) + 2 patterns for multiple items on the same page (nesting / individual items linked via @id). Complete categorized type table (Ecommerce/Organizations/Sports/Jobs/Entertainment/News/Food/Education) + required fields / key gotchas for each type. **Latest deprecation**: FAQ rich results will no longer be displayed starting 2026-05-07 (tools removed in 2026-06 / API removed in 2026-08). JavaScript-generated SD (Google Tag Manager / custom JS) + note that Product SD via GTM may face reduced crawl frequency. Image license metadata schema.org/CreativeWork (creator + creditText + copyrightNotice + license + acquireLicensePage). Speakable is only for news + en-US/-CA/-AU/-IE/-NZ/-UK + a few sentences totaling ≤ 30 seconds. Paywalled content SD must be distinguished from cloaking by marking isAccessibleForFree=false + cssSelector. Carousel (only available for Recipe/Course/Restaurant/Movie) + 4 categories of ItemList @id linking.
Roles and topic categorization for 80 authors of the Google Search Central blog. Includes Matt Cutts (Distinguished Engineer on the early Search Quality team), John Mueller (Search Advocate / official search spokesperson), Gary Illyes (Google Search team analyst), Vanessa Fox (PM from the founding era of early Webmaster Tools), Maile Ohye (technical lead for developer programs), Susan Moskwa (early Webmaster Trends analyst), Pierre Far (Webmaster Trends), Danny Sullivan (Public Liaison), Martin Splitt (Googlebot Whisperer), Daniel Waisberg (Search Advocate / Search Console), Lizzi Sassman (technical writing), Cherry Prommawin (APAC search quality), Duy Nguyen (search quality), and others. **The author pages themselves are extremely minimal** (role + Twitter link), and this serves as a reference directory.
Role and topic domain classification for 80 authors of the Google Search Central Blog. Includes Matt Cutts (Distinguished Engineer, early Search Quality), John Mueller (Search Advocate), Gary Illyes (Analyst, Google Search team), Vanessa Fox (Product Manager, founding era of Webmaster Tools), Maile Ohye (Developer Programs Tech Lead), Susan Moskwa (early Webmaster Trends Analyst), Pierre Far (Webmaster Trends), Danny Sullivan (Public Liaison), Martin Splitt (Googlebot whisperer), Daniel Waisberg (Search Advocate/SC), Lizzi Sassman (Technical Writer), Cherry Prommawin (APAC Search Quality), Duy Nguyen (Search Quality), and more. **The author pages themselves are extremely minimal** (role + Twitter link), serving as a reference directory.
Google Discover appearance mechanism (no special tag, based on interest + helpful content + large image 1200px+ + max-image-preview:large) + traffic is inherently unpredictable. Image SEO (use `<img src>` not CSS / image sitemap / descriptive filename + alt / og:image / primaryImageOfPage SD / SafeSearch / opt-out inline). Video SEO (must have watch page index + dedicated page for single video + Key Moments Clip/SeekToAction SD + Live Badge + allow fetching video files). Core Web Vitals 3 metrics (LCP <2.5s / INP <200ms / CLS <0.1) + Page Experience 6-dimension self-assessment. Avoid intrusive interstitials (use banner instead of modal / let Googlebot bypass mandatory interstitials). Signed Exchange (prefetch speeds up LCP + Web Packager). Site names (WebSite SD + alternateName + domain level). Web Stories (must be valid AMP + 4 required metadata + self-referential canonical + 5 content policies 280 characters / video-first). Flexible Sampling (metering 6-10 articles/month + lead-in shows first few sentences + paywall SD prevents cloaking). Package tracking (India/Japan/Brazil + 700ms API). Byline date (prominently visible + datePublished/dateModified SD). Top Places List (curated, not sponsored). Reviews system (11 languages + evaluates first-party reviews + site-level evaluation if volume is large).
A compilation of official original sources for the 5 major milestones in Google Search evolution: RankBrain (2015, first deep learning ranking system / apex predator example) + BERT (2019, Transformer understanding word-to-word relationships / 10% of US English queries affected / "for someone" example) + MUM (2021, T5 / 1000x BERT / 75 languages / multimodal / Mt. Fuji example / average 8 queries for complex tasks) + HCU (August 2022, site-level ML classifier / "written for ranking" detection) + AI Overviews (May 2024, custom Gemini / multi-step + planning + AI-organized + video search). **Pandu Nayak's February 2022 overview = the only official article that covers all 4 major milestones together**. These 5 are the "constitution" of Google ranking; E-E-A-T and Google's stance on AI content are all derived from them.
