How does search engines work?

The search engine uses algorithms (mathematical formulas) to determine exactly what you're hunting for, adding in synonyms, anticipating your terms befor you've even finished typing, and offering corrections in case you've made a mistake.
Your request is sent to the search engines servers. Here, the company that owns the search engine maintains a massive index of all the works, photos, videos, songs, and other data strewn across the WORLD WIDE WEB . This information- enough to fill hundreds of million of gigabytes- is continuously collected and updated by programs called "SPIDERS" that crawl across the Web and sift through it's information.
From it's index, the search engine gathers every Web page with content that matches your search term. Results are filtered based on hundreds of factors, including the pages' age, the no. of people who've visited the pages, their estimated reliability, and more.
The results are ranked as links in your Web browser, with the most relevant Web pages at the top of the list.


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