When fractional CMO or COO support works - and when it doesn't

At some point in the growth of almost every B2B company, you hit the same wall.

You need experienced leadership. You can’t afford it. So you do what most founders do - you build a junior team that can grow with the business. People who are hungry, capable, and who will develop into good operators over time.

The team grows. The expertise gap doesn’t close.

A fractional CMO or COO - someone who works embedded in your business, typically two to three days a week, without the cost of a full-time hire - is supposed to close it. Whether it actually does depends on what’s driving the gap, and most companies don’t think carefully enough about that before they bring someone in.

I’ve been on both sides of this

Across 25 years in B2B - as a founder, COO who scaled a business from 15 to 100 people, and CMO - I’ve sat in rooms trying to figure out how to get senior expertise into the business without the salary that came with it. More recently, as a fractional CMO, I’ve been the person brought in to fill that gap.

What I’ve learned from both sides is that fractional is often positioned as a cost solution - senior talent at a fraction of the price. That framing isn’t wrong, but it misses what’s actually valuable about it.

The real value isn’t the hours - it’s the pattern recognition. You’re bringing in someone who has run this function before and can tell you in month one what took them years to learn firsthand.

What a fractional CMO or COO actually delivers

When I worked as a fractional CMO for a startup going through a brand repositioning and launching a new product under a new company name, the most useful thing I did wasn’t the positioning work itself. It was stopping them from doing things that looked completely sensible but would have cost them six months of effort.

In that engagement - and in almost every business I’d worked with before it - the same instincts kept showing up. The first was channel spread. The instinct is to be present everywhere - LinkedIn, Instagram, X, email, a newsletter, maybe a podcast. The instinct makes sense: more channels means more reach. But spreading across five channels at partial effort produces less than one channel at full attention. Every time. The move that works is to pick one, go deep until it’s genuinely working, then expand.

The other was market scope. Growing businesses almost always want to go after a large market from the start. The pitch deck demands it; the ambition demands it. But attacking a large market from a standing start rarely works. Pick a niche small enough to win, own it completely, then move to the next adjacent niche. You get to the large market eventually - you just get there from a position of strength rather than spreading yourself thin from day one.

Those are from the CMO side. Having spent years on the COO side as an operator, I’ve seen the same pattern show up differently. One of the most common is the management promotion mistake. When a business is growing fast, the temptation is to promote your best individual contributor into a management role. It feels like the obvious move - they know the business, the team respects them, it solves an immediate problem. What it actually does is remove your best performer from the work and put someone untested in a role they’re not ready for. The business ends up with a struggling manager and a gap in execution where its strength used to be. I’ve seen this play out enough times to say “not yet” before it happens.

The specifics change but the principle doesn’t. There are decisions that look right from inside the business and are obviously wrong to someone who has been there before. That’s what you’re buying: the ability to say “I’ve seen this” rather than “I’ve read about this.”

When fractional leadership works

The businesses where fractional CMO or COO support tends to work are at a specific inflection point - big enough that the expertise gap is actively slowing them down, not yet ready to justify the full-time hire that would close it. Typically somewhere between ten and two hundred people, working through a specific strategic or commercial challenge that needs someone who has been there before.

A typical engagement runs two to three days a week, usually for six to twelve months - long enough to get real traction on the problem, not just diagnose it. What makes it work is a problem with a shape: reposition the brand, fix the pricing for the new product, build the operational layer the business has outgrown. That gives a fractional leader real traction in the time they have.

The CEO also has to be ready to act on what they hear. Fractional isn’t advisory from a distance - it’s someone embedded in the business, in your Slack, in your leadership meetings, telling you things you might not want to hear. If you’re not going to change anything, neither side gets value from it.

When fractional doesn’t work

Fractional doesn’t work when the problem is an execution gap rather than an expertise gap. If you need more hands doing the work, a fractional hire won’t solve it - you need contractors or a full-time hire. A fractional CMO or COO can set the direction and the approach, but they can’t deliver at volume in the time they have. Confusing the two is the most common mistake when structuring these engagements.

And it doesn’t work when you already know you need a full-time hire but are using fractional to delay it. If the business has genuinely outgrown the model - if what’s needed is someone with the full authority and bandwidth of a permanent role - fractional will take some of the pressure off but won’t solve the underlying problem. Using it to defer that decision usually just delays it.

Fractional is for a specific window, a specific kind of problem, and a CEO who’s ready to move when they get the answer. If you’re trying to work out whether that’s where you are, that’s what the advisory sprint is for.