Yahoo Moves U.S. Search to Microsoft

"Yahoo Inc. said it has completed a transition of the inner workings of its Internet search service to Microsoft Corp. on sites in the U.S. and Canada, marking a significant milestone in the companies' partnership.

'The transition of organic search between Yahoo and Microsoft is complete,' Yahoo senior vice president of Yahoo Search Products Shashi Seth wrote in a blog posting Tuesday.

Mr. Seth wrote that Yahoo's Internet, image and video search on both desktop computers and mobile phones are now being powered by Microsoft, though the companies are still testing the shift of Yahoo advertisers to Microsoft's search advertising platform.

Yahoo announced last week that it had begun shifting its search service over to Microsoft's technology."

Yahoo Moves U.S. Search to Microsoft - WSJ.com