This study provides a comprehensive assessment of the impact of Advertising Creative Strategy (ACS) on advertising elasticity, founded on an integrative framework which distinguishes between the Function (content) and the Form (execution) of an advertising creative. Function is evaluated using a three-dimensional representation of content (Experience, Affect, Cognition), whereas the representation of Form accounts for both executional elements and the use of creative templates. The distinction between Function and Form allows for the investigation of potential synergies between content and execution, previously unaccounted for in the literature. The ACS framework also facilitates the calculation of composite metrics that capture holistic aspects of the creative strategy, such as Focus, or the extent of the emphasis on a specific content dimension, and Variation i.e., changes in content and execution over time. The empirical application focuses on a Dynamic Linear Model analysis of 2251 television advertising creatives from 91 brands in 16 consumer packaged goods categories. The findings suggest that in terms of Function, experiential content has the biggest effect on elasticity, followed by cognitive and affective content. Function and Form produce synergies that can be leveraged by advertisers to increase returns. Finally, Focus, Variation and the use of templates increase advertising elasticity.