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How Search Happens: Before & After you Click En...

How Search Happens: Before & After you Click Enter @ SearchAfricon

Google & others don't make it easy but there's a lot of misconceptions about what happens when you make a search and how content get's in to Search Engines' Indexes. Dave goes through the process and what it means for us as SEOs

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davetheseo

May 03, 2025
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  1. How Search Happens: Before & After you Click Enter @davetheseo

    https://davetheseo.com /daves-decks/ https://www.linkedin. com/in/davecousin/
  2. A simplified view of how most Search Engines work: Crawl

    Index Ranking Algorithm Search Send Fetch Results Query
  3. A simplified view of how most Search Engines work: Crawl

    Crawlers or Bots follow links to find new pages & content
  4. A simplified view of how most Search Engines work: Send

    Fetch Index s & If indexable pages & content added to a database (index). Sea sco
  5. A simplified view of how most Search Engines work: Results

    Query Search s. User searches: query expanded, context processed, ‘terms’ weighted.
  6. A simplified view of how most Search Engines work: Send

    Fetch Results Query Ranking Algorithm Search matched to pages in index. Matches scored, 100s of other factors decide positions. Us pro
  7. SEOs can (must) influence every stage Crawlability Indexability Rank/ Position

    Relevance • Page Discoverability • Internal Linking • Robots Blocking • Mobile Version • Redirects & Status Codes • Site Hierarchy /Structure • Navigation • Sitemaps • Cookie handling • Page Indexability • Robots Tags • Duplicate Handling • International Targeting • Content Indexability • JS / SPA reliant • Mobile Visibility • Blocked Resources • E-E-A-T Content • Content Length • Content Quality • Content Surfacing & backlinks • Experience & Expertise • Topical Relevancy • Quantity of content • Backlinks • Internal Linking • User Engagement • CTR • SERPs Features • Page Experience • Keyword Matching • Keyword Research • Opp. Analysis • Content Ideation • On Page Optimisation • Semantic Relevancy • Content Quality • Writing Style • Markup • Localisation • Market level KWR • Localised content • Targeting
  8. SEOs can (must) influence every stage Crawlability • Page Discoverability

    • Internal Linking • Robots Blocking • Mobile Version • Redirects & Status Codes • Site Hierarchy /Structure • Navigation • Sitemaps • Cookie handling • P • • •
  9. SEOs can (must) influence every stage Indexability • Page Indexability

    • Robots Tags • Duplicate Handling • International Targeting • Content Indexability • JS / SPA reliant • Mobile Visibility • Blocked Resources • E • T
  10. SEOs can (must) influence every stage Rank/ Position • E-E-A-T

    Content • Content Length • Content Quality • Surfacing & Links • Experience+Expertise • Topical Relevancy • Quantity of content • Backlinks • Internal Linking • User Engagement • CTR • SERPs Features • Page Experience • K • • • •
  11. SEOs can (must) influence every stage Relevance e • Keyword

    Matching • Keyword Research • Opp. Analysis • Content Ideation • On Page Optimisation • Semantic Relevancy • Content Quality • Writing Style • Localisation • Market level KWR • Localised content • Targeting
  12. The Crawling Process 1. Start Crawler finds first page on

    a new site via external links, sitemap or submission 2. Download Crawler goes to first page and downloads the HTML file, finding links within it 3. Discover Crawler follows each link and continues to find new links on each page 4. Stop Crawler stops when all pages are found or crawl budget is used up 5. Render Indexer returns to pages to render pages including running supported scripts 6. Index Page content is added to the index (additional links found may be crawled)
  13. The Crawling Process 1. Start Crawler finds first page on

    a new site via external links, sitemap or submission
  14. The Crawling Process irst page on a new site nks,

    sitemap or 2. Download Crawler goes to first page and downloads the HTML file, finding links within it Crawler follows each lin continues to find new lin each page
  15. The Crawling Process 3. Discover Crawler follows each link and

    continues to find new links on each page
  16. The Crawling Process ws each link and ind new links

    on 4. Stop Crawler stops when all pages are found or crawl budget is used up Indexer returns to pages render pages including running supported scrip
  17. The Crawling Process 5. Render Indexer returns to pages to

    render pages including running supported scripts
  18. The Crawling Process to pages to ncluding ted scripts 6.

    Index Page content is added to the index (additional links found may be crawled)
  19. Links Matter Without links, search engines might never find this

    page This page is 9 clicks/links from the home page
  20. Javascript & CSS Checking Indexable Content • Mobile Friendly Tool

    • Google Search Console • Screaming Frog JS & CSS Issues • Too Slow to Load (timeout) • Blocked (by robots.txt) • Issue for Baidu & Yandex • Non-Static Links • Cookie Reliant • Forwarding based on IP • Web Apps
  21. Weighted expanded Google’s Information Retrieval System 25 Index Match Score

    Ranking Algorithm Query Handling Search Candidate Docs Fetch Results Query 3 : 2 Scored Pairs Feedback Loop
  22. Query Expansion •Google started adding Machine Learning in 2015 •Now

    uses LLMs to add synonyms and contextually relevant terms
  23. Query Expansion Contextual & Intentual Expansion •best gifts for curious

    kids •affordable STEM toys •gifts that encourage learning •inspiring young scientists •gifts to spark curiosity •birthday ideas for science lovers •recommended by teachers / parents •cool gifts for smart kids •popular 2024 STEM gifts Interest #2: Astronomy & STEM •telescope •stargazing kit •planetarium projector •space-themed gifts •constellation map •science toys •solar system model •NASA merchandise •space puzzles •astronomy books Interest #1: Reading •books •novels •science fiction •young adult literature •educational books •bookworm •fantasy novels •graphic novels •astronomy- themed fiction •reading gifts Synonyms & Related Phrases (Gift & Recipient) •present •gift idea •birthday present •unique gifts •teenager •teen •young adult •14-year-old girl / boy / nonbinary •middle schooler •age-appropriate •gifts to spark curiosity •birthday ideas for science lovers •recommended by teachers / parents •cool gifts for smart kids •popular 2024 STEM gifts what can I give as a gift to a 14 year old who loves reading and astronomy?
  24. Term Weighting •Not all parts of a search term are

    equal Nike Running Shoes Nike Running Shoes Running Shoes
  25. Term Weighting •Which words are important? •Which sequences of words

    are important? •Non Weighted: • Match MORE terms what can I give as a gift to a 14 year old who loves reading and astronomy?
  26. Term Weighting •Which sequences of words are important? •Weighted: •

    Match IMPORTANT terms what can I give as a gift to a 14 year old who loves reading and astronomy?
  27. Matched Scored Pairs •How well does the page match the

    query? 3 : 2 Page A. The best phone for photo editing Page B. Top smartphones for photography lovers 2025 "best phone for photos" 95 10
  28. Matched Scored Pairs •How well does the page match the

    expanded queries? 3 : 2 Page A. The best phone for photo editing Page B. Top smartphones for photography lovers 2025 "best phone for photos" 40 72
  29. Key Content Ranking Factors Expertise & Experience Trustworthy Relevance User

    Experience Authority Does the writer show expertise and/or 1st person experience? Can the content be trusted? Is the page relevant to the user’s query? Do we trust this site to provide users with a good experience? Is this page an authoritative source among other relevant pages? Content content Content Quality Content Optimisation User Signals Backlinks Topical Authority Use of data, anecdotes, qualification to cover, other content by author. Is content accurate & well researched? Does it contain the searched keywords & match the users’ intent? Are users engaging with your content and finding it useful? Are 3rd party influential websites linking to your content? Are websites relevant to the topic of your site linking to your content? Copy Focus