Forrester evaluated 12 leading database marketing service providers across 143 criteria. Our analysis identifies Merkle, Targetbase, KnowledgeBase Marketing, The Allant Group, and Epsilon as Leaders in our enterprise evaluation — due in large part to a combination of integrated delivery, advanced analytics, and favorable client feedback. These Leaders are challenged by two groups of Strong Performers: niche players like ChoicePoint Precision Marketing, Equifax Database Services, and Fair Isaac and those working to fully integrate the sum of their parts, including Acxiom, Harte-Hanks, Experian Marketing Services, and infoUSA.