This document discusses marketing effectiveness and measurement in the data age. It provides information on MediaCom Business Science, including that they have over 130 employees in 14 offices and a UK centre of excellence with 45 econometricians evaluating over ยฃ850m worth of billings. It also discusses how marketing measurement has evolved from 16 years ago when there were fewer media channels to today where consumers are exposed to many more communications. Econometrics has become the accepted solution for measuring communications effectiveness. The document ends by discussing how defining the right KPIs for each marketing activity is important and that the future of media targeting and measurement will involve more granular single source data.