Most marketing teams that have brought things in-house over the past few years have done so for the same reasons: to cut costs, move faster, and gain more control.
In the first year, it often feels like a win. Agency spending is down, things are moving faster, and for the first time it feels like you’re in control.
Then the second year rolls around and it gets really tough. Savings stop getting better, the team ends up being bigger than you planned, and everyone is busy all the time. But the results, which were meant to justify all the change, are not really moving.
This happens more often than anyone would like to admit. Not because bringing things into the house was the wrong call. Most teams just start with the wrong things.
You have submitted a virtual work. The hard stuff stayed.
When teams bring marketing in-house, they often start with execution. Paid search, paid community, program, campaign management. These roles are easy to define and hire, and feel like a quick way to manage.
What can be underestimated is how much lies beneath solid execution. Using paid media in a way that drives meaningful business results depends on more than the speaker’s knowledge. It requires a testing infrastructure built over time, measurement systems that exceed high-level metrics, and a depth of experience across a variety of market conditions and account structures.
Creativity is often one of the biggest drivers of performance, but it only works if it’s part of a systematic evaluation process. Iterative cycles, hypotheses, and constant feedback loops between art and media are what allow performance to evolve over time. Without such a plan, creativity becomes a spontaneous thing, and the results rise quickly.
Measurement has a similar issue. Setting field metrics or short-term performance targets can make performance look stable while slowing growth. What matters is how the work is linked back to the income. That requires a measurement method that shows growth, contribution to actual sales, and where future growth is coming from, not just what has already been converted.
At the same time, the agency’s role tends to diminish rather than evolve. What remains is a partner who is expected to contribute strategically, but without the full context, authority, or integration needed to do so well.
The result is a self-serving separation. Acting inwardly excludes the supporting systems and information that enable it. The agency is still involved, but in a reduced capacity that limits its impact. Costs increase, complexity increases, and performance becomes harder to identify.
What does that cost in practice
When the division remains in this way, the pieces of accountability. No one is really in charge of the performance results in the end. The internal team is in charge of the execution but not the decisions that shape it. The agency owns some strategies but not the authority to act quickly.
The explanation is how the measurement works. Groups in this situation use measurement to report what happened rather than to guide what happens next. If something isn’t working well in the middle of a campaign, doing something about it requires a conversation, a meeting, an exit from someone who isn’t close enough for the data to move quickly. Platform reps fill the vacuum. Decisions to be made internally are automatically deferred. You’ve added headcount and complexity without adding control, and too many people in a broken build just makes it harder to see what’s broken.
What a great agency relationship it really is
Getting the most out of the hybrid model means using the agency for what it’s really built to do: cross-species pattern recognition, test infrastructure that integrates over time, field access that can be delegated. Not just a job that didn’t make it through the hiring process.
Field access is the hardest part to see until you’re out there. Agencies maintain relationships with Google, Meta, TikTok, and others on a level that many brands cannot achieve independently. That means early access to products in development, before they are available to everyone. Our partnership with TikTok, for example, has given us alpha access to Market Scope and Attitude Ads. The beauty brand we ran saw an ad recall of 27.8% compared to the benchmark of 6.57%, likeability increased by 15.1% from flat, and an increase of more than 5,000% in their target audience. Our most powerful product elevation results to date. A strong internal brand structure would be from scratch, without the relationships that made access possible in the first place.
What a fair breakup looks like
The question you should ask isn’t how much of your marketing you spend in-house. Whether the separation you have is intentional or is something that has accumulated over time.
Fixing it means mapping it out clearly: what is the internal team really in charge of, what is the agency in charge of, and where are the cuts that limit decisions? The framework we use with clients reveals skills from activities where internal proximity is a real advantage, things like media management, budget ownership, and product decision-making, operations where external infrastructure and client expertise will almost always outweigh a single internal team. The goal is to make the separation intentional rather than hereditary.
If you’ve put in some of your marketing and performance and it’s still not where it should be, the question isn’t what else you can bring in-house. Who really owns the performance results in your current setup, and is your measurement telling you what to do next or just recording what has happened? If the answer to both is not immediate, that’s where you can start.
