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What is Spider?

Spider- a term used in the world of Web Technologies, refers to a software program that crawls through websites and collects information. These programs are also known as web spiders or web crawlers. The primary function of a spider is to index web pages for search engines.

Spiders are designed to follow links from one page to another, analyzing each page's content and metadata. They collect data such as keywords, descriptions, and titles, which search engines use to rank the pages in their results. Spiders are essential tools for search engines because they help keep the databases up-to-date with new information on the internet.

However, spiders can also be used for other purposes besides indexing web pages. They can be programmed to gather specific types of data or monitor website changes regularly. Many businesses use spiders as part of their market research strategy or to track competitors' prices.