Sophisticated search engines also try to pick out a concise answer for some queries, and show that above the list of results. When you enter a query, the search engine consults its index to quickly return you a list of URLs where it saw relevant information while crawling. It organizes all this information into an “index.” Search engines are constantly “crawling” and “indexing” the Web: They run software that reads webpages and catalogs the information it finds there, then follows links to other pages to repeat the process. The search results page for the query “running shoes” is a great place to buy ads for your running-shoe company, because those ads will be seen by people who have explicitly shown interest in buying shoes. Search engines also offer valuable ad space. If a company sells running shoes, and the company’s website doesn’t appear on the first page of results when someone searches for “running shoes,” the company will miss out on a lot of business. If you run a business, your position in search results can make or break your business. Whatever comes up on the first page of search results for a given query is, for all practical purposes, the Internet’s answer to that query. Search engines are a very common way for people to find what they’re looking for on the Web. That’s sometimes called a search engine too. The most widely used search engine, by far, is Google Search, usually just called “Google.” Google Search is so ubiquitous that “to google” has become a verb meaning “to search the Internet.” Some large sites, like YouTube, have search functionality that only finds items on that site (videos and channels, in YouTube’s case). Is a browser the same as a search engine?Ī search engine is a service, accessible over the Web, that finds information on the Web in response to your queries.What is search engine optimization (SEO)?.
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