Article | REF: H7240 V3

Search Engines: Google, Bing and their competitors

Author: Olivier ANDRIEU

Publication date: April 10, 2022, Review date: February 29, 2024

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2. Search engine crawl system

As we have already seen, several steps are necessary for a search engine to function properly:

  • In the first phase, software crawls the Web from link to link, retrieving information from web pages;

  • This information is then indexed by indexing engines, with the indexed terms enriching a regularly updated – database of words contained in – pages;

  • finally, a search interface enables results to be returned to users by ranking them in order of relevance.

2.1 Spiders / Robots

Spiders (also known as agents, crawlers, robots or bots) are browser programs that constantly visit web pages and links to index...

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Search engine crawl system