The account is estimated to be worth US$50 million in media spend.
Incumbent agency Carat confirmed the account shift, adding that the Asia-Pacific win had followed ZO's appointment as the brand's lead media agency in Europe earlier this year.
Sources have confirmed that the Asia-Pacific pitch, held in August, involved ZO, Carat and MediaCom and was held seperately from the European pitch.
ZenithOptimedia declined to comment.
This is the latest in a series of account wins for ZO in the region this year. In May, the media agency won Maybank, followed by Merck and recently, SCA.