How Google Works? Everything you need to know

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How Google Search Engine Works

Google is the biggest monopoly when it comes to search engines. Worldwide, the market share of Google Search Engine is around 91.89%, making it the most favorite search engine ever.

Google processes around 3.5 billion search queries every day, which translated to around 40,000 queries every second.

You search about various things on Google every single day, but ever wondered how Google works and shows you the most relevant results? 

There are more than 175 million active websites on the internet. Keep in mind that Google doesn’t have information about all the sites that exist on the internet. If you make a new website, it will take around 2-5 days for that particular website to appear in the search results because Google runs various codes and algorithms and tries to visit every possible website on the internet, and then adds it to its database. 

This process is not a one time process. People update their websites regularly, and so does Google. Google keeps on updating its database so that the users get the most relevant information.

First of all, understand that whenever you search on Google, you are not searching on the internet. You are searching the index of pages that Google has stored on its database. That means that you can only visit those websites through Google, which it has indexed. 

That’s why websites on the Dark Web and The Deep Web do not appear on Google when you search for them on Google.

So let’s see how Google works.

Spiders

google spiders how google works

Suppose Google came across a website, now what’s Google supposed to do with it?

Google wants to visit that website and store all the valuable information in its database. But how would Google do that?

That’s where the concept of Search Engine Spiders comes into play.

A Search engine Spider, or simply spiders (web crawlers), is an Internet bot that crawls the websites and stores that information for the search engine to index.

When a spider visits a website, it searches for all the hyperlinks (links pointing to another website or even the same website. If the Spider got to know about ten such links on that website, the Spider automatically visits these ten websites and crawls. This process continues, and that’s how Google scans the whole internet. 

The Spider indexes all the relevant information, and stores it in the database. The internet is full of such bots so that these bots can crawl as many websites as they can and also update them. For storing the data of millions of websites, Google maintains a huge database. 

Now let’s see what happens when a user types something in the search and hits return.

google search results

When a user hits enter after typing something, Google’s software searches the index to find every page which includes that particular page.

For example, say, you searched for “Shoes” on Google. Now the software searches the index to find every single page, which includes the term or keyword “Shoes.”

In this case, there are millions of possible results. So how does Google decide which are the relevant ones? By asking questions.

Questions like:

  • How many times does this page contain that particular keyword (in this case, “shoes”)? 
  • Do the keywords appear in the URL, Title, and Meta Description?
  • Does the page also include any synonyms for those keywords?
  • And what’s the quality of the website on which that page exists? Is it good, or is it low quality, like spamming?
  • What is the authority of the host domain?
  • What is the page’s PageRank(PR)? (PageRank is an algorithm used by Google. It rates the importance of a webpage by looking at the number of relevant outside links it points to)

Apart from these, various other factors affect the ranking of a webpage in Google’s Search Results.

Last but not least, Google combines all these factors to produce each page’s overall score and sends you the search results within a second.

Google doesn’t charge even a single penny to rank any website higher in the search results, add a website to its index, or improve its ranking. Although Google displays ads to generate revenue, and only relevant ads are presented to the user, which might be helpful for the user.

If Google doesn’t find any relevant ad., it won’t show you any irrelevant ads just for its sake.

If you want to learn more about how Google works, you can read the book “How Google Works” by Eric Schmidt.

You can visit this link to buy the book.

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