New clients for ZOOM, which is part of the Ogilvy Group, include Touchline Media, SuperMax, Penbev (Coca-Cola and Powerade), Robben Island Museum, Independent Online, TechINK, Delheim, Good Hope FM and Afrifresh.
Commenting on the acquisition, John de Bruyn said: "All our clients support this move and are excited about the future".
Managing director of ZOOM, Steve Massey added: "As part of the Ogilvy group, we can offer JDB's clients not only a very good home but also an impressive global network of services and resources".