Some search engines also mine data available in databases or open directories. Modern search engines are based on techniques and methods developed in the field of Information retrieval. Unlike web directories and social bookmarking sites, which are maintained by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. As of January 2022, Google is by far the world's most used search engine, with a market share of 90.6%, and the world's other most used search engines were Bing, Yahoo!, Baidu, Yandex, and DuckDuckGo. The information may be a mix of hyperlinks to web pages, images, videos, infographics, articles, and other types of files. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs).
It searches the World Wide Web in a systematic way for particular information specified in a textual web search query. The results of a search for the term 'lunar eclipse' in a web-based image search engineĪ search engine is a software system that finds web pages that match a web search. ( July 2021) ( Learn how and when to remove this template message) Please help add missing citation information so that sources are clearly identifiable.
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