How Google Works

Want to know how Google works? Here is a complete flowchart and infographic that show how Google works. Whether you are a webmaster, web developer, internet marketer, blogger, or a web enthusiast, getting to know how Google works will certainly help you. Google search engine, uses Google bots to crawl web pages in websites, and get them indexed. But how Google really works? Read below to find your answers.

Having knowledge on how Google works will help you get an advantage on having better search engine optimization (SEO) optimization, better search engine rank result (SERP), and better website page rank (PR). Below is a flowchart and a how Google works infographic. The information listed here can be found on PPCBlog, that greatly explains and shows how Google works, and some detailed information about the Google search engine and Google AdWords.

how google works

Summary: How Google Works (Technical)

Here is a short summary on how Google search technology works, but for more friendly information, see the flowchart or the infographic below.

The software behind Google search technology conducts a series of simultaneous calculations that requires only a fraction of a second. Traditional search engines rely too much on how often a word appears on a web page. Google use more that 200 signals, including their patented PageRank algorithm, which examine the entire link structure of the web and determines which pages are most important. Google then conduct hypertext-matching analysis in order to determine which pages are relevant to a specific search being conducted. By combining overall importance and query-specific relevancy, Google are able to put the most relevant are reliable results on its first page.

Google Data Centers

Google is very secretive about its data centers, but here are some information about Google data centers.

google datacenter

– There are over 19 data centers in the US, with at least 17 more around the world.

– They can be up to 500,000 square feet and $600 million each.

– Google data centers highly efficient and Google aims to become carbon neutral.

– Data centers use between 50-100 megawatts of power and often found near water (cooling).

– Google servers are housed in standard shipping containers that hold 1,160 servers each.

How Google Works Flowchart

Here is a flowchart on how Google simple works.

Once crawled, the page is indexed within seconds.
  • Page content is stored in a reverse index.
    • Page titles and link data are stored in one index used for broad and competitive searches.
    • On page content is stored in another index used for obscure and long tail searches.
  • When you search google, you are not searching the active web, but Google’s cache of it, which is constantly updated.
Google estimates the domain and page’s overall authority based on links.
  • Google bots follow links. If there are no links to your site, typically it will not get crawled deeply or regularly.
  • Google bots won’t crawl your site if you tell them not to with a robots.txt.
  • If links to your site have a nofollow tag, the google bots won’t arrive from those links.
  • Google may also find your site by being pinged by blog software or xml sitemaps.
  • The more links you have from higher authority pages, the greater your own pages’ authority.
  • As long as they are not tagged ‘nofollow’
Pages are checked against editorial policies.
  • Google’s Search Quality team and Webspam Team review and refine algorithms.
  • 10,000+ remote testers rate the quality of their searches.
  • Google solicits spam reports from users.
  • Google gets DMCA notifications to take down pirated work.
Penalties are applied and each page now has many pieces of data attached to it that help in user searches.
User queries Google.
  • “On most Google queries, you’re actually in multiple control or experimental groups simultaneously… Essentially, all the queries are involved in some test.” -Patrick Rile, Google search quality engineer
Google suggests keywords based on what has been typed so far.
Google uses synonyms to look for similar words to include in search query.
Initial result set is created.
  • Google may claim millions of results but only 1,000 or less are ever displayed.
  • Result localization: Local websites are promoted in the search results.
Result set is sorted by authority and PageRank and duplicate pages are removed.
  • Google finds relevant ads based on keywords, ad match type and user location.
  • Ads are subject to editoral policy.
    • Advertisers operating outside the guidelines may have their ad accounts banned.
    • If the keyword has low search volume or ad generates too few clicks, ads might be automatically disabled.
    • Favored business, perhaps like Amazon.com maybe given a discount.
  • Relevant ads are orders based on earnings potential. (bid x ad quality score)
  • For most advertisers the content is already created but sometimes dynamic keyword content is used to make the ad appear more relevant.
    • Some ads also have extensions available, like site links, phone numbers, product links, location, etc.
  • If the ads generate a high enough clickthrough rate, some may be shown above the search results.
  • The rest go to the right rail where they are displayed.
Filters applied.
  • With universal search, if Google thinks news results, shopping results, video results, book results, local results, or any other form of vertical search are relevant then they may mix these directly into the search results.
  • User Personalization: Past websites the user visits are often promoted.
  • Excessive anchor text manipulation can cause websites to be removed from the results.
  • Local interconnectivity of the result set: If pages are well linked among other high ranking sites, then their ranking may be boosted.
  • Trending: If the search term has a huge burst in search volume and/or lots of recent news results, google might place additional weighting on fresh results.
  • Multiple pages from the same domain may be clusted together if they have a high rank.
Organic results displayed.

How Google Works Infographic

Here is a detailed infographic showing how Google works.

how google works

Google is really been helpful to people, and the Internet. Imagine the Internet without Google or any other search engines, it will be hard for us to search for useful information that you can use. These search engines helps us a lot, and have become a part of our Internet lives, especially those who are working in the field of web development.

See this for more Google Easter Eggs and Tricks!

Also this will make you smile. Google Do A Barrel Roll and Tilt! and Google Let It Snow!

Search engines are very powerful and helpful tools that we should utilize. Knowing what are Google bots and how they manage to crawl our site, will make us have a better on-page SEO in our website. Take advantage in knowing how Google really works, as that will help you on your site. For now, enjoy and have fun learning how Google works!

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Ameer

Ameer is your techie friend, the head admin, and editor-in-chief of this blog. In here we share the latest technology news and updates, computer tips and tricks, SEO, games and gaming news, and other tech articles that aims to help you with today's technology.

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5 Comments

  1. chrisair April 1, 2012
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