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The Six Ways to Structure a Brand–Agency Relationship

By Phillip S. Pessaro, Founder, Throughline
October 2, 2026
List of six brand–agency engagement models: agency of record, retainer plus projects, fixed fee, sprint-based, embedded team and fully in-house.

There are six ways to structure the relationship between a brand and a creative agency. I've worked inside all six.

None of them is universally right. The right one depends on your budget, your team and where you intend to be in five years. Here they are.

1. Agency of record

One partner owns nearly everything. Large retained teams, layers of personnel, and a client lead, a strategy lead and a creative lead.

It made sense when a brand needed one firm to do everything. Outside the biggest advertisers, it's dying.

2. Retainer plus projects

A small core team stays on your business all year, and project teams come in when the work demands them. You keep the people who know your business and stop paying to retain capacity you don't use.

It's also fading, because many brands now build that core team themselves.

3. Fixed fee

One assignment, a lean team and a defined scope, with no standing overhead.

Excellent when the need is clearly bounded. Less so when you want a partner who knows your business deeply.

4. Sprint-based

Not new. It has existed in digital product development for decades. Short cycles, weekly reviews and work shown before it's finished.

It builds trust and catches errors early. It can also lengthen the schedule and raise the cost, because feedback on unfinished work can change direction mid-stream. Don't assume it's cheaper. It often isn't.

5. Embedded team

You employ a creative director or strategist who sees the agency's work before anyone else does. This adds judgment early.

It only works if that person has the authority to change the work. If all they can do is review it, you've added a step, not a safeguard.

6. Fully in-house

No outside partner. The right setup depends heavily on scale: what suits a marketing department of a hundred bears no resemblance to what suits a department of ten.

How to choose

Don't ask which model is best. Ask which one fits your budget, your people and where you're going.

Then look honestly at your current engagement model. If it was built for the company you were three years ago, it's time to change it.

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Frequently Asked Questions

What are the main types of agency engagement models?

The six common models are agency of record, retainer plus projects, fixed fee, sprint-based, embedded team and fully in-house. Each fits a different combination of budget, team and business goals.

Is the agency of record model still used?

Mostly by the largest advertisers. For most other brands, it has been replaced by leaner arrangements such as project work, fixed-fee assignments or in-house teams.

Is a sprint-based agency model cheaper?

Not necessarily. Sprints build trust and catch errors early, but feedback on unfinished work can change direction mid-stream, which can lengthen the schedule and raise the cost.

How do you choose the right agency engagement model?

Match the model to your budget, your internal team and where the business is heading. Review it regularly, since a model built for the company you were a few years ago may no longer fit.