How did you approach incrementality? I have some experience in this area, and get frustrated when marketers talk in terms of ROAS/ROI, without discussing the return compared to other options.
The ultimate goal of the marketer is to use the most effective, scalable channels. The optimization isn't against a fixed goal (CPA), but against the entire universe of ways to spend each marketing dollar.
The ultimate goal of the marketer is to use the most effective, scalable channels. The optimization isn't against a fixed goal (CPA), but against the entire universe of ways to spend each marketing dollar.