Bing (search engine) are entered and a list of related searches (called "Explore pane") based on semantic technology from Powerset, which Microsoft had acquired in 2008. In July 2009, Microsoft and Yahoo! announced a deal in which Bing would power Yahoo! Search. All Yahoo! Search global customers and partners made the transition by early 2012. The deal was altered in 2015, meaning Yahoo! was only required to use Bing for a "majority" of searches. In October 2011, Microsoft stated that they were working on new back-end search infrastructure with the goal of delivering faster and slightly more relevant search results for users. Known
TEK search engine search using existing search engines, downloads actual pages, and emails a subset of those pages back to the user. TEK search engine TEK is an email-based search engine developed by the TEK project at the Massachusetts Institute of Technology. The search engine enables users to search the Web using only email. It is intended to be used by people with low internet connectivity (for example, high-priced internet connection and low bandwidth connection in developing countries). TEK stands for "Time Equals Knowledge"; the search engine compensates the searching availability to the time needed for searching. To perform a web search, a