What Does Spider Mean?
In the context of the Internet, a spider is a specialized software designed to systematically crawl and browse the World Wide Web usually for the purpose of indexing Web pages in order to provide them as search results for user search queries. The most famous of such spiders is the Googlebot, Google’s main crawler, which helps to ensure that relevant results are returned for search queries.
Techopedia Explains Spider
A spider is essentially a program used to harvest information from the World Wide Web. It crawls through the pages of websites extracting information and indexing it for later use, usually for search engine results. The spider visits websites and their pages through the various links to and from the pages, so a page without a single link going to it will be difficult to index and may be ranked really low on the search results page. And if there are a lot of links pointing to a page, this would mean that the page is popular and it would appear higher up on the search results.
