A search engine is a software system designed to carry out web searches. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs). The information may be a mix of links to web pages, images, videos, infographics, articles, research papers, and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories, which are maintained only by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. Any internet content that can't be indexed and searched by a web search engine falls under the category of deep web.
Popular search engines include Google, Yahoo! Search, Bing, and DuckDuckGo.
Search engines at Microsoft
Microsoft first launched MSN Search in the fall of 1998 using search results from Inktomi, after reaching a deal with them in the previous year.[1] In early 1999, the site began to display listings from Looksmart, blended with results from Inktomi. For a short time in 1999, MSN Search used results from AltaVista instead. Microsoft had planned to transition away from usage of Inktomi in 2001, but instead dropped Altavista in 2002.[2] Then Microsoft let its deal with Looksmart expire in January 2004, causing their market value to crash by 62% as Microsoft had been responsible for 60% of their revenue.[3] In 2004, Microsoft began a transition to its own search technology, powered by its own web crawler (called msnbot).
Microsoft's rebranded search engine, Bing, was launched on June 3, 2009. On July 29, 2009, Yahoo! and Microsoft finalized a deal in which Yahoo! Search would be powered by Microsoft Bing technology.[4]
References
- ↑ Microsoft Joins With Inktomi to Provide Comprehensive Search Capabilities for Microsoft Online Properties, Microsoft. 1997-10-20.
- ↑ Microsoft returns to Inktomi for search services by Jim Hu, CNET. 2002-01-02.
- ↑ LookSmart Smarts After Microsoft Quits by Eric C. Fleming, Barron's. 2003-10-08.
- ↑ Microsoft and Yahoo: Search partners by David Goldman, CNN Money. 2009-07-29.
External links
- Change your default search engine in Microsoft Edge at Microsoft Support
- Search engine at Wikipedia
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Wikipedia (article: Search engine )
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