Digitas has been named interactive agency for Taco Bell, at the conclusion of a digital review the Yum Brands chain began this spring. The account is heading to the Publicis Groupe agency after a couple of stops at Interpublic Group of Cos' DraftFCB and R/GA in recent years. DraftFCB will continue to handle broadcast, merchandising, multicultural and media for the brand, which launched the tagline "Live Mas" to goose sluggish sales at the start of the year. Santa Monica, Calif-based Search Consultancy SRI International handled the review. Among those said to be in contention during the pitch were agencies such as Publicis sibling Denuo and the newest member of the WPP family, AKQA. The review was launched on the…