Paid media often becomes too important to manage informally before it becomes large enough to justify a full in-house team. At that point, the real decision is what kind of support the business actually needs.
Start with the problem—not the provider
An agency is usually strongest when you need breadth and delivery capacity across several disciplines. An in-house hire makes sense when the workload justifies permanent ownership. A consultant is often the better fit when you need senior judgement, specialist depth and hands-on input—but not a full external team.
Before comparing providers, define the gap. Is the strategy unclear? Is execution too slow? Is creative testing producing activity rather than learning? Or do you simply need more delivery capacity? The right structure follows from the problem.
A consultant is often the better fit when…
You need senior input without another management layer
The person shaping the strategy is also the person reviewing the account, analysing performance and discussing decisions with you. That direct access matters when the problem is nuanced and decisions need to move quickly.
You already have capable people—but need specialist support
A capable in-house marketer, creative team or existing agency can still benefit from an experienced outside perspective. A consultant can strengthen the existing setup without replacing it.
You need to diagnose performance before committing to a bigger solution
Sometimes the immediate need is not ongoing management. It is understanding why acquisition costs have risen, why spend will not scale or why platform reporting does not match commercial performance. A focused diagnosis can establish what needs to change before you commit to a larger solution.
Do you need more output—or better judgement about what to do next?
An agency may be the better fit when…
You need a multidisciplinary team covering media, creative production, landing pages, tracking and reporting at meaningful volume. An agency can also provide more delivery capacity and day-to-day cover than a single consultant.
The trade-off is that senior expertise can sit further away from execution. That is not true of every agency, but it is worth establishing who will actually work on the account once the pitch is over.
What to look for—whichever route you choose
- Commercial thinking: Can they connect platform activity to customers, revenue and contribution—not just ROAS inside an ad account?
- A clear testing process: Is there a system for generating ideas, running tests and applying the learning?
- Transparency: Will you understand what is happening, why decisions were made and what comes next?
- Relevant experience: Have they solved problems at a similar level of spend, complexity or growth stage?
- Honest scope: Are they clear about where they add value—and where another specialist would be a better fit?
A practical way to decide
Choose an agency when you need a team. Choose an in-house hire when you need permanent ownership. Choose a consultant when you need experienced judgement, direct access and flexible senior input.
The structure can change as the business develops. A consultant may diagnose the problem, improve the way the work is managed and support a later hire or agency appointment. The objective is not to choose one model forever. It is to bring in the right capability for the stage you are at now.