Running co-marketing on vibes instead of incremental measurement

Running co-marketing on vibes instead of incremental measurement

Co-marketing — joint webinars, co-authored reports, bundled campaigns — is frequently justified by reach metrics (registrations, impressions) that say nothing about incremental pipeline. The mistake is measuring activity, not lift.

The measurement gap:
— A joint webinar with 400 registrants feels successful, but many attendees were already in both partners' funnels. Reach double-counts shared audience.
— Without a control, you cannot separate the campaign's incremental contribution from baseline demand that would have converted anyway.

The fix — design for incrementality:
— Tag co-marketing-sourced accounts and compare their conversion and velocity against a matched non-exposed cohort.
— Measure net-new accounts to each partner, not total registrants — the overlap is the least valuable segment.
— Track assisted-pipeline influence with a holdout where ethically and operationally feasible.

Caveat: true holdouts are hard in co-marketing because audiences self-select into webinars. Where a clean control is impossible, use pre/post velocity comparison and label the result as suggestive, not causal.

Open question: of your last co-marketing campaign's pipeline, how much was genuinely incremental versus demand you already owned and merely re-counted?