Marketing leadership

How to brief a marketing agency so the work serves the business

Replace a deliverables-only request with a brief that defines the buyer, decision, evidence, constraints and measure of success.

The short answer

A useful agency brief states who the work is for, what needs to change, why the audience should act, what evidence supports the message and how results will be assessed. Include constraints, responsibilities and approval rules. A list of assets is the output section of the brief, not the strategy.

Define the buyer. Specify the change. Agree the evidence. Decision framework for How to brief a marketing agency so the work serves the business.
Decision framework: Define the buyer → Specify the change → Agree the evidence.

A request is not yet a brief

“We need twelve posts and a landing page” tells the agency what to produce. It does not explain why those objects exist or what would make them useful.

Without that context, the agency fills the gaps. It may optimise for engagement, visual polish or quick delivery because those are the measures visible to it. You then review the result against expectations you never wrote down.

The solution is not a longer presentation. It is a clearer set of decisions before production begins.

The seven parts of a useful brief

Business problem. State the actual constraint. For example, suitable prospects attend a demo but cannot explain the business case to their colleagues. Avoid a vague instruction such as increase awareness unless you define whose awareness and why it matters.

Audience and situation. Describe the person, the trigger and the context in which they encounter the work. A buyer preparing an internal recommendation needs different material from someone first discovering the category.

Desired next step. Name one primary action or change in understanding. It might be requesting a diagnostic, involving another stakeholder or recognising that a specific problem is worth investigating.

Message and proof. State the proposition and provide the evidence the agency can use. Mark claims that require verification. Never make the team guess what the product can promise.

Deliverables and distribution. Specify formats, destinations and how the work will reach the intended audience. A strong asset with no distribution plan can remain invisible.

Constraints and ownership. Include budget, timing, available assets, dependencies, approvers and product limits. Name one person who resolves contradictory feedback.

Evaluation. Explain what the work should influence, what can be measured and when the team will review it. Separate production acceptance from business performance.

A hypothetical brief in practice

Suppose an enterprise software company keeps losing momentum after successful demos. Sales records suggest that implementation effort is a repeated concern.

The brief could ask for a concise implementation guide for the internal buyer champion. It would use a verified rollout sequence, define customer responsibilities, address common risks and give sales a relevant follow-up asset.

The immediate quality test is whether a buyer can understand the rollout without another explanation. The commercial test is whether suitable opportunities progress with fewer unresolved implementation questions. Neither test is the same as counting page views.

The agency should be allowed to question the diagnosis. If the interviews show that budget approval is the actual barrier, revising the brief is progress rather than disobedience.

Improve the feedback loop

Review work against the brief before discussing personal taste. Does it address the intended buyer? Is the claim supported? Does the next step fit the situation? Is important information missing?

When you change the objective during review, acknowledge the scope change. A team cannot fairly be judged against one assignment while receiving feedback for another.

Keep a short record of decisions so the next project starts with accumulated context. Otherwise every brief recreates the same conversation.

The founder's final check

Hand the brief to someone outside the project and ask them to explain what success would look like. If they can only repeat the list of deliverables, the business purpose still needs work.

First 10's Strategic Direction engagement includes setting the strategy, writing briefs and reviewing agency work. The objective is to make the agency's effort more useful by giving it a clear job and a fair basis for evaluation.

Apply this to your business

Give the agency one buyer, one decision the work should change and one example of a qualified enquiry. Ask it to explain what evidence it needs before proposing deliverables.

Frequently asked questions

What belongs in a marketing agency brief?

Include the business problem, buyer, offer, evidence, desired action, constraints, decision owner and measure of success. Deliverable quantities help scope production but cannot replace the strategic context.

How should agency work be reviewed?

Compare it with the agreed brief and the customer response it was intended to produce. Distinguish weak execution from an unproven strategy before asking for another round of cosmetic revisions.

Why Mohit is writing this

At AjnaLens, Mohit coordinated brand, content and performance work; through Ten12 he advised startups using outside help. He knows why an agency needs a buyer and a business decision, not only a deliverables list.

About Mohit and his work
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Share the offer, target buyer and current agency request. Mohit can turn it into a brief with clearer priorities and evaluation criteria.

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