How The Top 6 Search Engines Work: Google, Bing, Yahoo, Baidu, Yandex, DuckDuckGo

How The Top 6 Search Engines Work: Google, Bing, Yahoo, Baidu, Yandex, DuckDuckGo 1

Search engines are designed to help users find the information they need quickly and easily. To do this, they rely on web crawlers, which are also known as spiders or bots. These search engine crawlers follow links to find new a web page, which is then added to an index that the search engine algorithms can use to provide search results.

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Search Engine Basics

Understanding how the search engine work is crucial if you want to be successful with search engine optimization (commonly referred to as SEO).

What is a search engine?

A search engine is a digital tool that helps people find information on the internet through search queries. There are many different types, but they all have one common goal: to provide users with the most relevant and accurate results possible.

How do search engines make money?

Most search engine results pages generate revenue through advertising. Advertisers pay the search engine each time someone clicks on one of their ads. This is known as pay-per-click (PPC) advertising. The more users a search engine has, the more ad clicks it will generate, and the more revenue it will generate.

How search engines build their index 

Search engines use different processes to build a search index. The process that Google uses is simplified below. Other popular search engines, such as Bing and Yahoo, have their own methods for indexing websites and determining relevancy.


Google discovers the URLs in many ways, but the three most common are:

  • From backlinks. With an index of hundreds of billions of web pages, Google is a powerful tool for finding new and interesting content on the internet.
  • From sitemaps. An xml sitemap is like a road map for your website.
  • From URL submissions. As a site owner, you can request that Google crawl an individual URL through Google Search Console.


Bots are computer programs that visit websites and download known URLs. Google’s bot is called Googlebot.

Processing & Rendering

Processing is where the Google index works to understand and extract key information from crawled pages. To do this, it has to render the page, which is where it runs the page’s code to understand how it looks for users. 

How The Top 6 Search Engines Work: Google, Bing, Yahoo, Baidu, Yandex, DuckDuckGo 2

To understand and extract key information from crawled pages, Google processes the page by running the page’s code to render it. This allows Google to see how the page looks for users.


Getting indexed is crucial if you want people to be able to find your content. The search index is what users query when they use a search engine, so without being indexed in major search engines like Google, Bing, Yahoo, Baidu, Yandex, DuckDuckGo, and other search engines – your audience will never know you exist. Make sure you’re doing everything you can to get indexed and improve your visibility online!

Here is an interesting fact – there is no doubt that Google is one of the most popular for search engine rankings. Owning 91.43% of the search engine market, it receives more traffic than Bing, Yahoo, Baidu, Yandex and DuckDuckGo combined. This makes it an extremely valuable tool for driving traffic to your website.

How search engines rank pages 

As anyone who has ever used Google, Bing, or Yahoo knows, the results returned are not always relevant to what you are looking for. This is because search algorithms are not perfect. They are constantly being worked on and improved, but there will always be room for improvement.

What are search algorithms?

Search algorithms are the key to finding the right information on the internet. Google search uses many different factors to determine the best results for a given search.

help with beginner's guide to seo for 2022

Key Google ranking factors

There are many factors that contribute to a website’s ranking on Google search results. However, we do not know all of them because Google has not disclosed this information. Some of the key ranking factors that we do know are discussed below.


Google’s ranking system takes into account many factors, one of which is the number of backlinks from another website owner. This is why having a high number of linking domains correlates strongly with organic traffic levels, as our study of over a billion pages has shown.

It’s not all about how many backlinks you have. The quality of your backlinks matters just as much, if not more.


Relevance is determined by how useful the search result is to the person who initiated the search. Google has different ways of calculating this. The most fundamental method is to look for pages that have the exact keywords as what was searched for. Another way Google looks at relevance is by looking at data related to how other users have interacted with the result.


How The Top 6 Search Engines Work: Google, Bing, Yahoo, Baidu, Yandex, DuckDuckGo 3

The ranking of results on a search engine depends on how fresh the content is. For searches that are looking for new and up-to-date results, fresher content will be ranked higher.

Page speed

Page speed is a critical ranking factor for both desktop and mobile searches. A slow page can negatively affect your ranking, while a fast page can help you maintain or improve your position.


As we all know, Google has been using mobile-first indexing since 2019. This means that when they are determining rankings, they give more weight to mobile-friendly websites.

How search engines personalize results

When you use Google, the search engine algorithm tailors its results specifically for you using machine learning. It looks at things like your location, language, and search history to give you the most relevant results possible.


Even if you’ve never been to Italy, you can still enjoy a delicious Italian meal right in your own backyard. Google uses your location to personalize the search results with local intent, so all of the results for “Italian restaurant” are from or about local restaurants.


No matter what language you speak, Google wants to give you the best possible search results. That’s why it ranks localized versions of content (if available) above all else.

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