Brand leaders can start incrementality measurement by choosing one retailer, one tactic, and one spending decision to test. Working with an analytics partner, they can estimate how many additional sales the advertising generated and decide whether to increase, maintain, or reduce investment. A focused pilot gives smaller teams a manageable starting point for evaluating the return on their measurement spending.

At the 2026 Commerce Media Brand Summit, a Director of Digital Growth Marketing at an organic food brand connected limited budgets to practical commercial questions: "What can you track back to performance? What will gain you the most sales?" The speaker also encouraged teams to assess the risks of each decision, identify ways to adjust course, and consider how quickly they could reverse a change.

Across the conference's measurement conversations, brand leaders emphasized starting small, involving analytics colleagues early, and building confidence before expanding. One team tested search campaigns with a single retailer for six weeks after spending approximately four months arranging data agreements and integrations, illustrating how preparation can take longer than the pilot itself.

An emerging-brand founder or eCommerce director should begin by identifying a specific spending question, such as whether additional search investment will generate enough incremental sales to justify its cost. Ask an analytics colleague or partner to recommend a suitable comparison method, confirm access to sales and media data, and establish the evidence needed to support a decision. Assign an owner, cap the pilot budget, and schedule a review to determine whether the team should expand, adjust, or repeat the test.

Join the next Commerce Media Brand Summit to learn how brand-side leaders run focused incrementality tests and make more confident retail media investment decisions.