In-House vs. Agency? It’s the Wrong Question.

There comes a moment in every marketer’s life where they look at yet another bloated agency invoice and think: Surely, there must be a better way.

That moment is often the start of the in-house conversation. The logic seems simple. Bring the team inside, gain control, move faster, save money. And for a while, it feels right. You have direct access, better brand alignment, and no more eye-watering retainers.

But then the cracks start to show. Your team gets bogged down in production. The fresh ideas dry up. And the same people who know your brand inside and out become so embedded they can no longer see the bigger picture. Burnout starts to feel inevitable.

So you think about calling an agency again. They bring outside perspective, a deep bench of talent, and the ability to handle big campaign moments. But they’re also slow, expensive, and will never understand your business as well as you do.

It feels like a choice between two imperfect options.

But what if you didn’t have to choose?

The smartest brands are moving beyond the old “either/or” debate. They’re designing systems that give them both: the deep integration of an in-house team and the diverse expertise of an external agency.

This is the third way. And it’s what we build at ZITE.

We design, implement, and run on-site agencies for our clients. Think of it as outsourcing the insourcing. We embed a dedicated team right inside your offices—they learn your brand’s DNA, sit in your meetings, and live your goals. They become an extension of your company.

But here’s the difference: they’re still our team. They’re backed by our processes, our technology, and a wider network of creative and strategic talent they can tap into anytime.

You get the intimacy and speed of an in-house team without the operational headaches of building one. You get the creative firepower and scalability of an external agency without the distance and competing priorities.

It’s not a compromise. It’s a competitive advantage. You get agency-level talent that is 100% focused on your brand, day in and day out. You get consistency and control, but also a constant injection of fresh thinking.

So maybe it’s time to stop asking whether you should go in-house or hire an agency. The real question is: what’s the best way to build a creative capability that lasts?

Sometimes, the answer is to let someone from the outside build it for you, on the inside.

Kasper Sierslev

Kasper is the Chief Creative and Commercial Officer at ZITE. An expert in in-house marketing setups, he has authored two best-selling books on the subject and collaborated with major international brands such as Apple, Lego, and Mars.

He has founded and led the in-house creative departments at Maersk, Georg Jensen, and Saxo Bank, and has assisted other organizations and brands in establishing their teams.

With over 20 years of experience in the advertising industry, Kasper has been recognized with international awards, including the European Digital Awards, Cannes Lions, and Muse Creative Awards.

Dedicated to nurturing creative talent, Kasper founded and continues to teach a content marketing course at The Danish School of Advertising.

Whether discussing the state of the in-house creative industry, sharing the pros and cons of in-house models, imparting wisdom on workflows and processes, or speaking on creativity at seminars, podcasts, or conferences, Kasper's insights are highly valued.

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The In-House Imperative