What vendor selection should establish before media commitment.

Existing relationships can bring useful knowledge and speed to a launch. They should be evaluated alongside the capabilities the current brief requires. A proportionate selection process helps the team make a reviewable decision without assuming that every brief needs a lengthy procurement exercise.

Define the role and the evidence.

State the audience, channel role, content requirements, geography, timing, and specific capability gap. Ask partners for evidence against that scope rather than a general capabilities presentation. Record which statements are partner-reported, independently checked, or unverified.

Use a common scorecard.

Compare eligible audience access, identity method and refresh, workflow or context fit, reporting rights, implementation requirements, cost, and service responsibilities. Set disqualifiers before scoring and weight the remaining criteria according to the brief. Keep an unsupported capability distinct from a demonstrated failure.

Commercial comparisons should include data, measurement, platform and service fees, minimum commitments, cancellation terms, and any dependencies. Use a common period and denominator. A lower CPM may not mean lower cost for the intended qualified audience.

Check measurement and handoffs.

If an outcome study is required, establish feasibility, sample needs, comparison design, coverage, and timing with analytics before promising an outcome metric. Delivery and engagement reporting can still be useful when causal impact cannot be established.

Map partner responsibilities for permitted audience sharing, CRM or field handoffs, reporting, and escalation. Cross-publisher frequency controls, suppression, and deduplication may be limited by identity coverage, platform capabilities, and data rights. Require an explicit account of what is feasible rather than assuming a data-sharing agreement solves each constraint.

Document the selection and the review.

Record why the chosen partner fits, what alternatives were considered, unresolved conditions, and the evidence that would prompt reconsideration. Agree the implementation owner and review cadence. Selection timing depends on access to evidence, procurement requirements, and the complexity of the engagement.