Index refers to the archive of web pages created for users by Google. In a nutshell, an indexing bot that crawls a website scans the relevant web pages in detail and indexes them.Then, the indexed web pages are assessed based on various criteria and presented to users through search engine results. Webmasters can notify the search engines of the web pages that they do not want to be indexed with the help of the robots.txt file and use the noindex tag to inform them that these pages should not be indexed.

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