Shashi Seth, Senior Vice President of Yahoo! Search Products, said ” I am proud to announce that the transition of organic search between Yahoo! and Microsoft is complete.” He then told everyone to check out the Bing blog to see what they had to say.

Bing said:

Today I am happy to share that Bing is powering Yahoo!’s search results in the US and Canada (English only for now, the other languages will come in the weeks and months ahead).

So what’s next? We continue to work hard on the migration to adCenter, and are optimistic about completing this phase later this fall. As we have said all along, our primary goal is to provide advertisers with a quality transition experience in 2010, while being mindful of the holiday season.

This is a great milestone for Bing and Yahoo! and our customers, and we are happy to report the transition has gone smoothly and we feel great about the progress our search alliance has been making over the summer.

Shashi Seth of Yahoo also added, “we are also working hard on finalizing our revenue model for the Yahoo! Search BOSS program going forward, and will be offering other search-related tools for publishers in the months to come.”

The full transition began about a week ago and is fully live now.

You can confirm this yourself by conducing a search at Yahoo and scrolling to the bottom of the page. At the bottom, there should be a “Powered by Bing” line in really small font: