The question used to be simpler. You hired an agency for the big stuff such as campaigns, creative, brand strategy and your internal team handled everything else. Then came digital transformation, the always-on content cycle and years of budget pressure that pushed organizations to pull more capability in-house.
And yet, for all that investment, many of those teams are still structurally underpowered. They have the talent. They know the brand. But they’re not set up to win. That gap between what in-house teams could deliver and what most organizations actually ask of them sits at the heart of one of the most consequential decisions marketing leaders face today: to build or buy?
Having worked on both the client and agency side for decades, I’ve watched this debate play out across organizations of every size and sector. The most common mistake isn’t choosing the wrong model; it’s the tendency to treat internal marketing teams as executional support rather than strategic partners. They deliver assets. They fulfill requests. They stay in their lane.
When that happens, you’ve effectively built a service center, not a marketing function. They know the organization’s history, culture, audiences and priorities better than any outside agency ever will. But without the authority to shape strategy, that knowledge goes to waste.
External agencies and consultants earn their value through exposure of wide experience. Working across multiple clients, categories and challenges simultaneously, they bring cross-pollination that a single-brand internal team structurally can’t. The team advising you on positioning may have just navigated a similar challenge for a company in a completely different industry, and that outside perspective often opens solutions that internal familiarity keeps invisible. It’s not that external people are smarter, they just bring in a different perspective and experience.
External partners also provide flexibility that permanent headcount can’t match. Specialized capabilities, brand development, research, category expertise or deep creative craft, which can be accessed when needed rather than carried full-time for periodic use.
The most useful lens for this decision isn’t cost, it’s the nature of the work itself. Ongoing, execution-heavy activities that require deep brand fluency are natural candidates for an internal team: content production, campaign management, social, email, day-to-day brand stewardship. These benefit from speed, consistency and institutional knowledge.
Periodic, high-stakes strategic work such as brand architecture and strategy, market positioning, often benefits from the expertise an outside partners brings. When that work is done well, your internal team has a clear, well-constructed platform to execute from. The two functions aren’t competing; they’re complementary.
To help you figure out whether to build or buy, consider the following questions:
■ What does your organization need on a daily or weekly basis and how much of that truly requires deep expertise versus disciplined execution?
■ What are the one or two marketing challenges that, if solved well, would most impact your business over the next 12 to 24 months?
■ What capabilities are you using infrequently enough that maintaining them in-house creates more overhead than value?
The answers usually point toward a hybrid model. The key is being clear about which activities belong in which bucket and resisting the pull to simply add headcount or eliminate agency relationships. ●
Dean Ilijasic is Co-founder of Long & Short of It
