The marketing mix modeling market is undergoing a transformation as marketers increasingly demand that vendors provide solutions that are updated frequently, can easily aggregate data streams, can provide forward-looking recommendations, and can account for the continuous evolution of digital channels, all in a package that is flexible and intuitive to navigate. In Forrester's 49-criteria evaluation of marketing mix modeling vendors, we found that MarketShare is a Leader thanks to its software functionality, extensive data partnerships, and innovative strategy to integrate with media agencies. Marketing Management Analytics (MMA) is also a strong option with its granular attribution tool and flexible software. ThinkVine excels with its unique consumer-centric, agent-based methodology, and SymphonyIRI Group's access to shopper and consumer data is unmatched. Marketing Analytics is a Strong Performer thanks to its strong modeling software but lacks access and shareability of models for agencies. Ninah is also a Strong Performer; it has a strong consultative approach but lacks a mature self-service software platform.