How does a search engine work ?

A search engine is an online tool that allows users to find information on the Internet by entering search queries. When you type a query into a search engine's search bar, it crawls through all of the web pages it has indexed to find the pages that best match your query.

There are several key steps in how a search engine works:

• The exploration of web pages: Web crawlers, also known as "spiders" or "crawlers", continually crawl the web to find new pages and to update existing pages. The robots follow the links from one page to another and add the pages they discover to their index.
• Indexing web pages: The content of each crawled page is then analyzed to extract key information, such as keywords and images. This information is then added to a giant index, which is used to route users to the pages most relevant to their search query.

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• Ranking of web pages: Search engines use a ranking system to determine the order in which search results should be displayed. Ranking factors can include the relevance of the page to the search query, the number of links to the page, and the quality of content on the page.
• The research: SearchWhen a user types in a search query, the search engine uses its index to find the pages that best match the query. It then displays the search results ranked in order of relevance.e:

There are many different search engines, each with their own ranking algorithms and features. The best known are Google, Bing, Yahoo, DuckDuckGo. Search engines also use different types of data to personalize search results for each user, such as browsing history, location, and personal preferences.