+A **search engine** is a digital gateway, sifting through the [World Wide Web](/wiki/world_wide_web) to uncover desired [information](/wiki/information). It indexes vast data, presenting relevant pathways for user queries.
+## See also
+- [Web Crawler](/wiki/web_crawler)
+- [Information Retrieval](/wiki/information_retrieval)
+- [Ranking Algorithm](/wiki/ranking_algorithm)
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