Managing agencies well: getting more from your marketing partners
Agencies underperform as often from poor client management as from poor work. How to brief, measure and manage marketing agencies to get senior value and real accountability.
Agencies underperform for two reasons — and one is yours
When an agency relationship disappoints, the instinct is to blame the agency. Often the fault is shared: agencies underperform as much from weak client management — vague briefs, no clear success metric, no accountability, junior day-to-day contact — as from weak work. The good news is that the client-side factors are the ones you control. Managing agencies well is a skill, and it materially changes the return you get. Having managed significant agency relationships across paid, CRM and creative, [APPROVAL NEEDED] here’s what actually works.
Brief for outcomes, not tasks
The single biggest lever is the brief. Brief an agency on the outcome you need and the commercial metric it maps to — not a list of deliverables. A task brief gets you tasks; an outcome brief gets you thinking and accountability. Give them the context, the constraint and the number, and let their expertise find the route.
Set one success metric and hold to it
Agree, up front, the commercial metric the relationship is judged on — CAC, qualified pipeline, contribution — and review against it. Without one agreed number, reviews become debates about activity, and no one is accountable for results. The metric is what turns an agency from a vendor into a partner.
Insist on seniority where it matters
The classic agency failure is a senior pitch and junior delivery. Insist on the senior involvement you were sold at the moments that matter — strategy, planning, problem-solving — and accept junior delivery only where it’s genuinely fine. You’re paying for expertise; make sure you get it.
Manage the relationship actively
Good agency relationships are managed, not left. Regular reviews against the metric, fast feedback, shared visibility of results, and a genuine partnership tone (not adversarial, not passive) get far more from an agency than an annual check-in. This is exactly the kind of oversight a fractional growth leader provides — someone senior, on your side, holding agencies to the outcome. It often pays for itself in improved agency return alone.
Frequently asked questions
Why do agencies underperform?
Often shared fault — weak briefs, no agreed metric, junior delivery and passive management as much as weak work. The client-side factors are fixable.
How should we brief an agency?
On the outcome and the commercial metric, with context and constraints — not a task list. Outcome briefs get accountability; task briefs get tasks.
Who should manage the agency relationship?
Someone senior enough to hold it to the outcome — in-house or a fractional leader. Passive management wastes the spend.
Not getting enough from your agencies? We manage partners to the outcome, on your side. Book a discovery call →
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