Yahoo and Mozilla have inked a five-year partnership that makes Yahoo the default search experience for Firefox in the United States on mobile and desktop. As part of the agreement, Yahoo will introduce an enhanced search experience for U.S. Firefox users which is scheduled to launch in December 2014.

Yahoo has appointed Mike Kail as CIO and SVP, Infrastructure. He will be heading Yahoo’s IT and data center operations, reporting to CEO Marissa Mayer. Most recently, Mr. Kail served as VP of IT Operations at Netflix. Prior to that, he was VP of IT Operations at Attensity. He holds a B.S. in Computer Science from Iowa State University. You can read Marissa Mayer’s Tumblr post on the appointment here.

Yahoo is acquiring mobile ad-exchange company Flurry. Financial terms of the transaction were not shared, but a report in the WSJ pegs the deal at over $200 million. The transaction is subject to customary closing conditions.