HOW DO SEARCH ENGINES WORK?

• This stage involves scanning the sites and obtaining information about everything that is contained there: page title, keywords, layout, pages that it links to at a bare minimum. This task is performed by special software robots, called spiders or crawlers. These robots usually start with the most heavily used servers and popular web pages
• In order to develop and maintain the search engine’s index, web crawling aims to thoroughly and methodically scour the internet for fresh content. Search engines can keep their search results current and relevant to users queries by regularly discovering and reviewing web pages.
• Once all the data has been assimilated, selected pieces of it are stored in huge storage facilities. We can relate in this way: we possess several number of books. Going through all of it is the crawling, and making a list of them, along with their authors and other related information is the indexing. that pretty much explains the magnitude a search engine undertakes.

Search engines are answer machines. Whenever we perform an online search, the search engines scour its database for the most relevant results. Also, it ranks these results based on the popularity of the websites. An engine might assign a weight to each entry, relative to their appearance in the title, meta tags or the sub-headings. This, however, led to something called keyword stuffing where the pages are mostly filled with nonsense as long as it includes the keyword.