Chief Marketing Officers: What the Role Demands

A Chief Marketing Officer sits at the intersection of brand, commercial performance, and organisational politics. It is one of the most scrutinised seats in the C-suite, with a shorter average tenure than almost any other executive role, and a mandate that varies so dramatically from company to company that two people with the same job title might share almost nothing in common beyond the acronym.

Understanding what the CMO role actually demands, and why so many capable marketers struggle in it, requires looking past the job descriptions and into the commercial and structural realities that define whether someone in that seat succeeds or fails.

What Does a Chief Marketing Officer Actually Do?

On paper, the CMO owns marketing strategy, brand positioning, demand generation, customer acquisition, and in many businesses, product marketing and customer experience. In practice, the scope is shaped by the organisation’s size, sector, and how seriously the board takes marketing as a commercial function rather than a cost centre.

In a direct-to-consumer business, the CMO is often functionally a growth officer, managing significant media budgets, owning acquisition economics, and reporting on CAC and LTV as fluently as any CFO. In a large B2B enterprise, the same title might mean owning thought leadership, sales enablement, and events, with little direct connection to revenue measurement. The title is consistent. The job is not.

What remains constant is the expectation of commercial accountability. Even in organisations where marketing has historically operated as a support function, boards and CEOs are increasingly expecting the CMO to connect their work to business outcomes. That shift has been building for years, and it has changed what the role selects for.

If you want a broader view of how marketing leadership works across different contexts, the Career and Leadership in Marketing hub covers the landscape in detail, from leadership styles to commercial frameworks that actually hold up in practice.

Why CMO Tenure Is So Short

The average CMO tenure at large companies has been declining for years and consistently sits below that of other C-suite roles. The explanation that gets repeated most often is that marketing is hard to measure. That is partially true, but it misses the more uncomfortable reason: many CMOs are hired under one set of expectations and evaluated against a different set entirely.

I have watched this dynamic play out from the agency side more times than I can count. A client brings in a new CMO with a brand-building brief. Six months later, the CFO is asking why leads are down. The CMO was doing exactly what they were hired to do, but the business needed something else and nobody had the conversation clearly enough at the start. The CMO exits. The cycle repeats.

The other factor is structural. Marketing sits downstream of product decisions and upstream of sales friction, which means the CMO often gets credit for neither and blame for both. When a product fails to resonate, marketing gets blamed for positioning. When sales underperforms, marketing gets blamed for lead quality. The CMO role absorbs organisational dysfunction in a way that other C-suite roles do not, and tenure reflects that exposure.

The CMOs who last tend to be the ones who manage upward and laterally as deliberately as they manage their own function. They spend as much time building credibility with the CFO and the Chief Revenue Officer as they do with their own team. That is not politics for its own sake. It is recognition that the CMO’s ability to do their job depends entirely on how much organisational trust they have accumulated.

The Commercial Trap: When Performance Metrics Become the Strategy

One of the most consistent errors I see in CMO decision-making, particularly in businesses under growth pressure, is the overweighting of short-term performance metrics. It is understandable. Performance channels are measurable, attributable, and easy to defend in a board presentation. Brand investment is harder to quantify and easier to cut.

The problem is that performance marketing, at its core, captures existing demand more than it creates new demand. When I ran agency operations managing hundreds of millions in ad spend across multiple sectors, the pattern was consistent: businesses that leaned too hard into lower-funnel activity would see strong short-term numbers, then hit a ceiling. The addressable audience of people already in-market for what you sell is finite. Once you have captured most of it efficiently, the only way to grow is to reach people who are not yet in-market and bring them there.

Think about how a clothes retailer works. A customer who walks in, picks something up, and tries it on is far more likely to buy than someone browsing the window. Performance marketing finds the people already at the fitting room. Brand marketing brings people into the shop who did not know they wanted to be there. A CMO who only optimises for the fitting room will eventually run out of customers.

This is not an argument against performance marketing. It is an argument for CMOs having a clear view of where they are on the growth curve and what kind of marketing the business actually needs at that point, rather than defaulting to what is easiest to measure and defend.

The Unbounce research on conversion rate optimisation illustrates how much can be extracted from existing traffic through tactical improvements, but it also underlines the point: optimisation has a ceiling. Growth beyond that ceiling requires different thinking.

What Boards Actually Want From a CMO

Boards want growth. Everything else is a mechanism for achieving it. The CMO who frames their work in those terms, consistently and credibly, is the one who builds board confidence. The CMO who leads with brand metrics, share of voice, or creative awards is the one who gets asked why the revenue line is not moving.

That does not mean brand metrics are irrelevant. It means they need to be connected to a commercial narrative. If brand awareness is up, the CMO should be able to explain what that means for customer acquisition costs over the next 12 to 18 months. If share of voice has grown, there should be a thesis about what that does to pricing power or category leadership. The metrics are fine. The missing link is usually the commercial translation.

Boards also want a CMO who can manage the marketing budget with the same rigour a CFO applies to any other significant cost line. That means being able to articulate trade-offs clearly: what you are investing in, what you are not, and why. Vague answers about long-term brand building without any commercial framing are a credibility problem in a board context. The CMO does not need to pretend that everything is perfectly measurable, but they do need to demonstrate that they are thinking about allocation seriously.

There is a useful tension here that the best CMOs hold deliberately. Marketing does not need perfect measurement. It needs honest approximation and clear thinking. The CMO who acknowledges uncertainty while demonstrating rigorous reasoning is far more credible than one who either overclaims attribution or hides behind the complexity of brand investment as a reason to avoid accountability altogether.

The CMO’s Relationship With Technology

The marketing technology landscape has expanded enormously over the past decade, and the CMO now sits at the centre of a significant technology estate. CRM platforms, data management, marketing automation, analytics infrastructure, paid media tooling, and increasingly AI-assisted content and personalisation systems all fall within or adjacent to the CMO’s remit.

The risk is fragmentation. Individual tools get bought to solve individual problems, and within a few years the marketing function is running a dozen disconnected platforms that do not talk to each other, producing data that cannot be reconciled, and costing far more in aggregate than anyone intended. Forrester’s perspective on technology islands is directly relevant here: disconnected systems create disconnected data, and disconnected data produces the kind of false precision that leads to bad decisions.

The CMO’s job is not to be a technology expert. It is to ensure that the technology estate serves the marketing strategy rather than the other way around. That distinction matters more than it sounds. I have seen marketing teams spend more time managing their tools than doing the actual work those tools were supposed to enable. The technology became the job.

AI is accelerating this challenge. The pace at which new AI-assisted marketing tools are entering the market means CMOs are constantly being asked to evaluate and adopt new capabilities. Buffer’s overview of AI writing tools gives a sense of how quickly this category alone has developed. The CMO who approaches AI adoption with a clear commercial question, what problem does this solve and what does it cost to integrate properly, will make better decisions than the one who adopts tools because they feel obligated to be seen as innovative.

Building and Leading a Marketing Team at CMO Level

The CMO’s ability to deliver depends significantly on the team they build and how they lead it. At the most senior level, this is less about direct execution and more about creating the conditions for good work: clear priorities, appropriate resources, the right people in the right roles, and enough psychological safety that people will tell you when something is not working.

When I was building out the agency team, growing from around 20 people to over 100, the hardest lesson was that the management style that works at 20 people does not work at 100. At 20, you can hold most of the context yourself. At 100, you have to build systems and trust people to operate within them. The CMO faces a version of this challenge in any organisation of meaningful scale: the work is too complex and too distributed to manage through personal oversight, so the quality of the team and the clarity of the operating model become the real levers.

Hiring at CMO level is also a different discipline than hiring at other levels. The CMO is not just hiring for skills. They are hiring for cultural fit with the broader organisation, for the ability to work across functions, and for commercial instinct. A brilliant creative director who cannot have a credible conversation with the CFO is a liability in a marketing function that is trying to build board-level credibility. That does not mean everyone in marketing needs to be commercially fluent, but the senior layer needs to be.

There is also a specific challenge around retaining good people in a marketing function. Marketing talent is mobile and in demand. The CMO who builds a reputation for developing people, giving them real responsibility, and connecting their work to commercial outcomes will attract and keep better talent than the one who manages by control and takes credit for the team’s work. This sounds obvious. It is surprisingly rare in practice.

The CMO in a Multi-Channel World

The channel landscape a CMO has to manage today is genuinely complex. Paid search, paid social, organic search, email, content, influencer, out-of-home, audio, connected TV, retail media, and emerging platforms all compete for budget and attention. The CMO does not need to be an expert in all of them, but they need a coherent framework for how to allocate across them.

Platform instability adds another layer of difficulty. The social media landscape in particular has shifted significantly, with audiences fragmenting across platforms and the reliability of any single channel as a primary growth driver becoming less certain. Buffer’s analysis of TikTok alternatives reflects a broader reality that CMOs are handling: audience attention is distributed across more surfaces than ever, and concentration risk in any one platform is a genuine strategic concern.

The CMO’s job in this context is to make allocation decisions that reflect both where audiences are now and where the business needs to build presence for the future. That requires holding a short-term and a long-term view simultaneously, which is harder than it sounds when quarterly performance pressure is real and the board wants to see results.

The discipline of thinking about marketing as a portfolio, rather than a set of individual channel decisions, is one of the things that separates CMOs who build durable growth from those who chase short-term numbers. Some investments pay back quickly. Others take 18 months to show up in the data. A CMO who can only defend the investments that pay back quickly will systematically underinvest in the things that drive long-term competitive advantage.

The lessons from Mad Men’s marketing era are a useful reminder that the fundamentals of persuasion and audience understanding predate digital channels entirely. The channels change. The underlying questions about what motivates people and how to reach them at the right moment do not.

What Separates Good CMOs From Great Ones

Having worked closely with CMOs across dozens of client relationships over two decades, and having judged the Effie Awards where you see behind the curtain of what effective marketing actually looks like in practice, a few things consistently distinguish the CMOs who build real commercial value from those who manage a marketing function competently but do not move the needle.

The first is intellectual honesty about what is working and what is not. The CMO who can look at their own data critically, acknowledge when a channel or a campaign is not delivering, and make a clear-eyed decision about reallocation is far more valuable than the one who defends every investment because admitting underperformance feels like weakness. Boards can handle bad news. What they cannot tolerate is being surprised by it.

The second is genuine curiosity about the customer. Not customer research as a box-ticking exercise, but a real interest in understanding how people make decisions, what they actually value, and where the brand fits into their lives. The CMOs who maintain that curiosity throughout their careers, rather than delegating it entirely to research teams, tend to make better strategic calls because they have a more grounded sense of what is real.

The third is the ability to simplify without oversimplifying. Marketing strategy at CMO level involves enormous complexity: multiple channels, multiple audiences, multiple time horizons, multiple stakeholders. The CMO who can distil that complexity into a clear strategic narrative, one that the board understands, the sales team believes, and the marketing team can execute against, is the one who creates alignment. Alignment is what turns strategy into results.

Early in my career, when I was still figuring out what good marketing leadership looked like, I made the mistake of assuming that demonstrating complexity was the same as demonstrating capability. It is not. The clearest thinkers I have worked with could explain exactly what they were doing and why in three sentences. That clarity is a skill. It takes longer to develop than most people expect.

For more on how marketing leadership develops across career stages, and the frameworks that hold up under real commercial pressure, the Career and Leadership in Marketing hub is worth exploring in full.

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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