In February, Deloitte Consulting was spun off as a separate business from Deloitte Touche Tohmatsu, a global professional services firm.
The ad campaign will include TV, print, online, events and other marketing components. Billings were undisclosed.
DDB will work with Creative Capital, Interbrand and Ketchum, which Deloitte named as marketing communications partners.
Three DDB offices from the U.S. and 10 from outside the U.S., led by DDB San Francisco, participated in the pitch. The other finalists were not disclosed.