Who should write the media brief?

Who writes the media brief is a question with a deceptively simple answer: the most senior marketing leader on the advertiser side owns the brief or the pitch consultant, with structured input from finance, procurement, and relevant business stakeholders. The brief is not a task to delegate downward or outsource to the agency you are about to replace. It is a strategic instrument, and ownership determines quality.

You are probably preparing for an agency review. The brief is where that process either gains traction or quietly starts to fail. Getting the authorship right is the first decision you make, and it shapes every presentation, every score, and ultimately every negotiation that follows.

Wait. Strike that last sentence. Let me be more precise: getting the authorship right is the first decision you make. It shapes every presentation, every score, and every negotiation that follows.

Who creates a media brief, and why it matters

The brief is the most consequential document in a media agency selection. Why the brief decides more than the presentations is a point that experienced procurement leads understand immediately: agencies can only respond to what they are requested. Ambiguous input produces polished but generic responses. Precise input forces agencies to make real choices, reveal their thinking, and expose their actual capabilities.

That is why authorship is not a procedural question. It is a quality question.

The person who writes the brief determines what the agencies learn about your business, what they are asked to solve, and what criteria will separate a strong response from a weak one. If the brief is written by someone without sufficient authority or context, the agencies will sense the gap. That gap may be filled with assumptions that will probably serve their own positioning.

The core author: the senior marketing leader or pitch consultant

The brief must be anchored to someone with genuine strategic authority over media investment. In most organisations, this is the Chief Marketing Officer, VP of Marketing, or Head of Media and Connections. The title matters less than the accountability: this person owns the business outcome that media spend is expected to deliver.

Their role is to provide the strategic frame. That includes business objectives, brand position, growth priorities, and any constraints that will shape the agency relationship, such as geography, category, or channel complexity. These inputs cannot come from a coordinator or a junior manager. They require someone who sits in leadership conversations and understands where the company is heading over the next two to three years. A pitch consultant will be able to provide relevant managerial support to the marketing lead.

This is precisely one of the expertis areas where an independent pitch consultancy adds structural value. It ensures the brief reflects genuine strategic intent and will generate relevant benchmarks, rather than a collection of historical reporting metrics.

Who contributes, and in what sequence

The brief is a single document with a single owner, but it draws on multiple sources. A brief written in isolation by one function almost always misses something material.

Finance contributes the budget planning and revenue envelope and any constraints on payment structure, contract duration, or performance guarantees. Procurement contributes the commercial framework: what terms are acceptable, what audit rights you require, and how agency fees will be structured and reviewed. Business unit leads contribute category and regional nuance that a central marketing team may not hold. Your sales director needs to be consulted as well. Where a company is active across diverse markets, those regional teams often carry knowledge about the local competitive landscape and media landscape dynamics that belong in the brief.

The sequence matters. The marketing leader sets the strategic direction first. Finance and procurement then pressure-test feasibility and add commercial parameters. Business unit input follows. The brief is then consolidated, redacted and approved by the marketing leader before it is issued. This prevents a common failure mode: the brief reading as a patchwork of departmental wish-lists rather than a coherent strategic commission.The art of a good brief, is also the ability to select and ignore certain inputs.

What the agency you are replacing should not contribute

This point is worth stating clearly. The incumbent agency should not be involved in writing the brief for their own replacement review. It may seem obvious, but in practice it happens more often than organisations realise, particularly when the internal team has become reliant on the agency for reporting, data, and strategic analysis.

If your team depends on the incumbent for market data or channel performance benchmarks, commission that input separately and treat it as one factual source among several. Do not allow the agency to frame the strategic questions and directions the review will answer. That framing belongs entirely with the advertiser.

When to involve an independent consultant

An independent media consultancy can serve as the structural author of the brief, under the direction of the senior marketing leader. This is not a delegation of ownership. It is a professionalisation of the drafting process.

A consultant brings three things a purely internal team often lacks: a template of what a rigorous brief must contain, benchmark knowledge of what agencies are capable of delivering, and the ability to pressure-test your brief against common weaknesses before it goes out. They also ensure that the brief connects cleanly to the evaluation criteria agencies will be scored against. That is the foundational logic behind what a good media brief should include.

The decision to involve a consultant is particularly relevant when the internal team is running a first-ever agency review, when the previous review was conducted more than four years ago, or when the scope is multi-market and requires alignment across regions with different agency relationships.

The media brief is the foundation of an agency selection, as set out in the media brief: the foundation of an agency selection. A consultant who has run dozens of these reviews brings pattern recognition that is difficult to replicate internally.

Common authorship mistakes and their consequences

The most frequent mistake is treating brief-writing as an administrative task and assigning it to someone below the decision-making level. The result is a brief that describes past activity rather than future ambition, lacks relevant clarity, and fails to pose the questions agencies need to answer. Agencies notice immediately. The responses you receive will reflect the quality of the brief you issued.

The second mistake is writing by committee without a single editor. Multiple authors with equal authority produce inconsistent documents. Priorities contradict each other. The commercial section conflicts with the strategic section. Agencies spend their response time interpreting the brief rather than answering it.

The third mistake is issuing the brief too quickly, under pressure to launch the review before the organisation is aligned internally. A well-structured media agency pitch typically runs between three and five months. The brief is the document that allows that timeline to be productive. A rushed brief compresses the timeline at the wrong end and leaves the negotiation with less room than it needs.

Frequently asked questions

Who creates a media brief? The senior marketing leader on the advertiser side is the primary author and owner of the media brief. Finance, sales, procurement, and relevant business unit leads contribute structured input, but a single person holds editorial authority and final sign-off.

Should the incumbent agency help write the brief for their own review? No. The incumbent agency should not contribute to the framing or drafting of a brief for a review in which they are participating. They may be a source of factual performance data, but authorship belongs entirely with the advertiser.

Can an external consultant write the media brief? Yes, under the direction and ownership of the business leader. An independent consultant can draft, structure, and pressure-test the brief, but the strategic intent and final approval remain with the advertiser. The consultant accelerates quality; they do not replace accountability.

How many people should be involved in writing a media brief? Keep the authorship circle small. One owner, two to four contributors providing structured input, and one editorial review by the senior leader before issue. Larger groups increase the risk of contradictions and diluted strategic direction.