C.2.7 Outline the purpose of web-indexing in search engines


Search engines index websites in order to respond to search queries with relevant information as quick as possible. For this reason, it stores information about indexed web pages, e.g. keyword, title or descriptions, in its database. This way search engines can quickly identify pages relevant to a search query.

Indexing has the additional purpose of giving a page a certain weight, as described in the search algorithms. This way search results can be ranked, after being indexed.

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