Live Search (formerly Windows Live Search and MSN Search) is the name of Microsoft's web search engine, designed to compete with the industry leaders Google and Yahoo!. Live Search is accessible through Microsoft's Live.com and MSN.com web portal. Currently, Live Search is the fourth most used search engine after Google, Baidu, and Yahoo!
The search engine offers some innovative features, such as the ability to view additional search results on the same web page (instead of needing to click through to subsequent search result pages) and the ability to dynamically adjust the amount of information displayed for each search-result (i.e. just the title, a short summary, or a longer summary). It also allows the user to save searches and see them updated automatically on Live.com.
The first public beta of Live Search was unveiled on March 8, 2006, with the final release on September 11, 2006 replacing MSN Search.
On March 21, 2007, it was announced that Microsoft would separate its Live Search developments from the Windows Live services family. Live Search was integrated into the Live Search and Ad Platform headed by Satya Nadella, part of Microsoft's Platform and Systems division. As part of this change, Live Search was consolidated with Microsoft adCenter.
In the roll-over from MSN Search to Live Search, Microsoft stopped using Picsearch as their image search provider and started performing their own image search, fueled by their own internal image search algorithms.