Last week, Yahoo announced that it had begun transitioning Bing results into Yahoo results – a product of the Search Alliance between Yahoo and Microsoft. Now, the companies have announced that the transition of organic results in the U.S. and Canada is complete.

This applies to web, image, and video search on Yahoo for both the desktop and mobile experiences of Yahoo Search.

Yahoo and Microsoft announced the beginning of the transition of organic search results today, but since the original announcement of the deal, it has been unclear what would happen to the Yahoo Search BOSS and SearchMonkey tools. That is because Yahoo had yet to make up its mind.

Yahoo’s mind has now been made up. BOSS will carry on, and SearchMonkey won’t.

Yahoo users (in the U.S. and Canada) will start seeing Bing results for organic searches this week. Yahoo and Microsoft announced that the transition is starting, and that the paid search transition is in the middle of testing.

Yahoo and Microsoft have provided an update on advertisers’ transition to adCenter as the Search Alliance gets underway.

Yahoo advertisers will soon either have to create a new adCenter account or link their Yahoo account to an existing adCenter account. Later this month, Yahoo advertisers will see an "adCenter" tab in their Yahoo Search Marketing account. This will take advertisers to the beginning of the account transition process where they’ll be walked through the steps.

Yahoo Japan is turning to Google to power its paid and organic search engine listings. This comes as something of a surprise as Yahoo has a huge deal in place with Bing that is just getting started, but Yahoo doesn’t actually own the majority of Yahoo Japan, so that version of Yahoo gets to do its own thing.

Yahoo has begun testing organic and paid search listings from Microsoft. Up to 25% of its search traffic in the U.S. may see organic listings from Microsoft, and up to 3.5% may see paid listings from Microsoft adCenter. I guess you could say that the early stages of the Search Alliance’s transition have begun.

Will you place more emphasis on Bing optimization as it integrates with Yahoo Search? Let us know.

At SMX Advanced last month, Microsoft announced that Bing would redesign its Webmaster Tools this summer. The new version is now available.

Bing Webmaster Tools Senior Product Manager Anthony M. Garcia summarizes the changes:

Microsoft and Yahoo have released a new video illustrating how the two companies intend to create a "powerful new choice in search" with their Search Alliance, due to begin making its way to customers before the end of the year.

There is not much in the way of news about the alliance to come from the video, but it does put its goal into a simple, easy-to-understand 2 minutes without going into all of the specifics.