The CMO Role Has Changed. The Job Description Hasn’t.

The CMO role is one of the most commercially consequential positions in a business, and one of the most poorly defined. At its best, the chief marketing officer sits at the intersection of brand, revenue, and customer understanding, translating market insight into business strategy. At its worst, it becomes a title attached to someone who manages agencies, approves creative, and reports on metrics that the board doesn’t fully trust.

The gap between those two versions of the role is wider than most job descriptions let on.

What Does a CMO Actually Do?

The formal answer is: lead the marketing function. The honest answer is considerably more complicated. A CMO in a large organisation is simultaneously a strategist, a budget holder, a people manager, a technology evaluator, an agency client, a board presenter, and often the internal advocate for the customer in rooms where the customer is not represented.

In smaller businesses, add copywriter, media buyer, and brand designer to that list, because headcount rarely matches ambition.

What has changed over the past decade is the commercial accountability attached to the role. It used to be acceptable for a CMO to own brand equity and awareness metrics while a separate commercial director or CRO owned revenue. That separation has largely collapsed. Boards now expect the CMO to connect marketing investment directly to business outcomes, and the ones who can’t make that connection tend not to last long in the role.

If you’re thinking about marketing leadership more broadly, the wider picture across career progression, team structure, and commercial accountability is covered in depth at The Marketing Juice’s Career and Leadership in Marketing hub.

Why CMO Tenure Is Still the Shortest in the C-Suite

CMO tenure has been a recurring topic in marketing circles for years, and the numbers have never been flattering. The role consistently sits at the bottom of C-suite longevity tables. The reasons are structural, not personal.

First, the CMO is often hired to solve a growth problem that isn’t purely a marketing problem. When a business is underperforming commercially, marketing becomes the obvious lever to pull. A new CMO arrives with a mandate to “drive growth,” inherits a team, a tech stack, a set of agency relationships, and a budget that may or may not be adequate for what’s being asked of them. If growth doesn’t materialise within 18 months, the CMO is the most visible person to move on.

Second, the CMO is frequently the least understood member of the leadership team. A CFO’s output is legible. A COO’s impact is visible in operational efficiency. A CMO’s contribution to revenue is harder to isolate, and in organisations that haven’t built the measurement infrastructure to attribute it properly, marketing spend starts to look like a cost rather than an investment. That perception is dangerous.

I’ve sat in enough board rooms to know that when a CFO asks “what did we get for that?” and the CMO can only answer in reach and impressions, the relationship starts to deteriorate. Forrester’s work on telling the real story of marketing’s impact is worth reading on this point. The framing matters as much as the data.

Third, and this is the one that doesn’t get talked about enough, many CMOs are brilliant marketers and poor political operators. The C-suite is not a meritocracy. It’s a coalition. A CMO who can’t build internal alliances, manage upward effectively, and make their agenda legible to people who don’t care about marketing will struggle regardless of how good their strategy is.

The Performance vs. Brand Trap

One of the most consequential decisions a CMO makes is how to allocate budget between brand building and performance marketing. And one of the most common mistakes is treating them as competing priorities rather than complementary ones.

I spent a significant part of my earlier career overweighting lower-funnel performance channels. The results looked good on paper. Cost per acquisition was trackable, attribution was clean, and the dashboards were easy to defend in meetings. What I didn’t fully appreciate at the time was how much of that performance was capturing demand that already existed, rather than creating new demand. We were efficient at harvesting, but we weren’t planting anything.

The analogy I keep coming back to is a clothes shop. Someone who tries on a garment is far more likely to buy it than someone browsing the window. Performance marketing finds the people already in the fitting room. Brand building is what gets people through the door in the first place. If you only invest in the former, you gradually shrink the pool of people who are even considering you.

A CMO who understands this distinction, and can articulate it clearly to a board that is more comfortable with performance metrics than brand metrics, is worth considerably more than one who simply optimises the bottom of the funnel. The challenge is that brand investment is harder to defend in a quarterly review. That’s a communication problem as much as a measurement problem.

What Boards Actually Want From a CMO

Boards want growth. That’s the honest answer. Everything else is a proxy for it.

But the way boards evaluate whether a CMO is delivering growth has shifted. It used to be enough to show brand health scores trending upward and awareness metrics improving. That’s no longer sufficient. The expectation now is that the CMO can connect marketing activity to revenue, explain the lag between investment and return, and make a credible case for the budget they’re holding.

There’s also a growing expectation around customer understanding. Not just data about customers, but genuine insight into how they think, what they value, and where they are in their relationship with the brand. The CMO who can bring that perspective into strategic conversations, and who can challenge product, sales, and operations on the basis of it, is operating at the level boards are looking for.

What boards don’t want, though few will say it directly, is a CMO who is primarily a creative advocate. Creativity matters, but it’s a means to a commercial end. A CMO who leads with creative ambition and follows with business rationale is working in the wrong order. The ones who last are those who start with the commercial problem and work backward to the creative solution.

The CMO’s Relationship With Data and Technology

The marketing technology landscape has expanded dramatically, and the CMO now sits at the centre of a technology estate that would have been unrecognisable twenty years ago. CRM, CDP, marketing automation, attribution platforms, personalisation engines, analytics suites. The list is long and the decisions are expensive.

The risk is that technology becomes a substitute for thinking. I’ve seen organisations invest heavily in martech and emerge with more data, more dashboards, and less clarity about what’s actually driving their business. The tools are only as useful as the questions being asked of them.

A CMO’s job is not to be a technology expert. It’s to set the commercial questions that technology needs to answer, and to build or hire the capability to answer them. Understanding what good looks like in terms of digital experience, for example, matters more than being able to configure the platform that delivers it. Resources like Optimizely’s thinking on digital experience optimisation are useful for building that frame of reference.

The CMO also needs a healthy scepticism about what the data is actually telling them. Attribution models are a perspective on reality, not reality itself. Last-click attribution made performance marketing look more effective than it was for a decade. Multi-touch models are better but still imperfect. A CMO who treats the dashboard as ground truth will make systematically poor investment decisions. One who treats it as one input among several, and who builds measurement frameworks that acknowledge uncertainty honestly, will make better ones.

Getting direct feedback from customers, not just through analytics but through tools that surface actual sentiment and behaviour, is part of this. Platforms like Hotjar’s website feedback tools are one way to close the gap between what the data says and what customers are actually experiencing.

How the CMO Role Differs by Organisation Type

The CMO role is not a single thing. It varies significantly depending on the type of organisation, the stage of growth, and the sector.

In a large enterprise, the CMO is primarily an executive leader. The work is about setting direction, managing a complex team, influencing the C-suite, and ensuring marketing is aligned with business strategy. Execution is largely delegated. The CMO’s value is in the quality of their thinking and their ability to build organisational capability over time.

In a scale-up, the CMO is more likely to be hands-on. There’s less infrastructure, fewer specialists, and a faster pace of iteration. The CMO in this environment needs to be comfortable operating without perfect information, making decisions quickly, and building the function from scratch while also delivering results. The agency management skills that matter in a large enterprise are less relevant here. The ability to write a brief, evaluate creative, and understand channel mechanics is more important.

In a B2B organisation, the CMO’s relationship with the sales function is often the defining dynamic. Marketing and sales alignment is talked about endlessly and achieved rarely. The CMO who can build genuine trust with the sales director, create demand generation programmes that sales actually value, and agree on a shared definition of a qualified lead, will have a materially different experience than one who operates in a silo.

In a consumer business, the CMO’s relationship with the finance function tends to be the critical one. Brand investment is harder to defend than performance spend, and the CMO who hasn’t built a strong working relationship with the CFO will find budget conversations increasingly difficult as the business matures.

The Skills That Actually Determine CMO Success

Category expertise matters, but it’s not what separates successful CMOs from unsuccessful ones. Most CMOs who fail do so because of one of three things: an inability to translate marketing into business language, a failure to build the internal relationships needed to execute their agenda, or a tendency to optimise for marketing metrics rather than commercial outcomes.

The skills that actually determine longevity in the role are less glamorous than most CMO profiles suggest.

Financial literacy is one. A CMO who can read a P&L, understand margin dynamics, and frame marketing investment in terms of return rather than spend is operating at a different level. I’ve managed significant ad budgets across a wide range of industries, and the conversations that went best were always the ones where I could speak the CFO’s language, not just my own.

Organisational patience is another. Large organisations move slowly. The CMO who arrives with a transformation agenda and tries to implement it at speed will encounter resistance that derails the whole programme. The ones who make lasting change tend to do it incrementally, building coalitions, demonstrating small wins, and earning the trust of the organisation before asking it to change significantly.

And then there’s the ability to develop people. The CMO’s output is, in large part, the output of their team. A CMO who can attract, develop, and retain strong marketing talent will consistently outperform one who relies on their own capability. The Content Marketing Institute’s mentorship programme is one example of how formalised development thinking is becoming more embedded in the industry. The CMO who invests in their team’s development, not just their own, builds a durable competitive advantage.

What the CMO Role Looks Like in Practice

A week in the life of a CMO is rarely what the job description suggests. Strategy documents and brand frameworks exist, but they sit alongside budget reviews, agency briefings, board presentations, recruitment decisions, performance conversations, and the constant work of managing upward, downward, and sideways simultaneously.

Early in my career, I learned that the difference between a marketing plan that gets funded and one that doesn’t is rarely the quality of the strategy. It’s the quality of the relationship between the CMO and the people holding the budget. A brilliant strategy presented by someone the board doesn’t trust will lose to a mediocre strategy presented by someone they do. That’s uncomfortable, but it’s true.

The practical implication is that a CMO needs to invest as much time in internal communication as external. The work of making marketing legible to non-marketers, of translating campaign performance into business impact, and of building the internal case for investment, is not a distraction from the job. It is the job.

There’s also the question of what to do when the strategy isn’t working. The CMO who doubles down on a failing approach because they’re committed to their original thesis will damage both the business and their own credibility. The one who can acknowledge what isn’t working, adjust course, and communicate that adjustment clearly, is demonstrating exactly the kind of commercial judgement that earns trust at board level.

Testing and iteration are not just tactical tools. They’re a mindset. The best CMOs I’ve encountered, and the best operators I’ve worked alongside, share a willingness to be wrong and a systematic approach to finding out faster. Whether that’s A/B testing creative in a conservative category, as Unbounce has written about, or rethinking a channel mix that’s underperforming, the discipline is the same: form a hypothesis, test it honestly, and act on what you find.

For more on how leadership operates in practice across the marketing function, the Career and Leadership in Marketing hub covers the broader terrain, from leadership style to team structure to commercial accountability.

About the Author

Keith Lacy is a marketing strategist and former agency CEO with 20+ years of experience across agency leadership, performance marketing, and commercial strategy. He writes The Marketing Juice to cut through the noise and share what works.

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