What Does a CMO Actually Do? A Practical Guide Built Around the Decisions

Look up what a CMO does and you get descriptions like "the senior leader for marketing" or "owns strategy and execution." None of it is wrong, but it does not show what the job consists of day to day. This article sets out the decisions a CMO actually makes, and the criteria behind them.

Judge the Role by Its Decisions, Not Its Remit

A CMO (Chief Marketing Officer) is the executive who makes the final calls in marketing.

The difference from a marketing director is not the breadth of the remit but the type of decision. A director decides how to hit a target that has been handed down; a CMO decides the target itself, and how much resource goes toward it.

Appoint a CMO while leaving that distinction vague and you get a change of title with no change in what happens.

Where to Point the Budget

The most frequent decision, and the one with the largest consequences.

Allocate on last year's results and resource concentrates on whatever worked in the past. That looks safe, and it leaves you unable to respond when the market shifts.

Allocate on headroom

What to look at is where the room to grow sits.

Adding budget to an area where you have already taken most of the available share yields little. Conversely, a small area with a high growth rate gets cut when you look only at today's revenue.

Concretely, split the work into what supports this year's revenue and what builds next year's, and set the ratio. A year with zero of the latter, repeated, leaves you without options a few years out.

What to Stop

Harder than the decision to start something new.

Left alone, the number of active campaigns only grows. Each may be small, but together they consume fixed effort and fixed budget.

Why the decision never surfaces

Because it does not come up from the team. Proposing to stop your own work is a difficult thing to do.

Which is precisely why the CMO has to make it. Two questions work as criteria.

• If this were proposed as something new today, would you approve it?
• If you stopped it and moved the resource elsewhere, what could you do?

Anything that fails the first question may be continuing on inertia alone.

How you stop is part of the decision

Stopping immediately and winding down mean different things. Anything customers are using needs a designed exit, or you damage trust.

Once you decide to stop, give the instruction together with the date and who gets told what.

How to Build the Team

In hiring, which position to fill first is a significant fork.

Whether you are short of people who execute or people who decide changes who you should hire. The team will always ask for the former; when both are short, filling the latter first is the established answer.

Add people who execute first and the queue of pending decisions gets longer, producing a team that grew without moving any faster.

Deciding what goes outside

Where to draw the line on outsourcing is also a CMO decision. The criterion is simple: do not send out anything that carries a judgment.

Decide on volume of work alone and you find, eventually, that an agency is proposing your budget allocation.

What to Say in the Executive Meeting

The part of the job least discussed relative to how much it affects outcomes.

Reporting campaign progress gives other executives nothing to decide with. Told that leads went up by some number, they have no basis for judging whether that is good for the business.

Translate into the language of the business

What to report is what you spent and what it became.

Even work that does not connect directly to revenue can be explained with proxy metrics: branded search volume, growth in new enquiries, the trend in opportunity conversion. You cannot prove causation, but a number that shows whether things moved is enough.

Lead with the bad news

Save the misses and failures for the end of the meeting and they read as deliberately buried.

Putting them first, with your response alongside, preserves trust. Holding to that order also spreads a culture inside the team where bad numbers are easier to report.

Splitting Short Term and Long Term

A tension every CMO carries.

This quarter's numbers always press, but leaning that way permanently means no new audience or channel ever develops. Lean too far the other way and you miss the target in front of you and lose credibility.

The workable approach is to ring-fence the longer-term allocation up front. Ordered as "whatever is left over," nothing is ever left over.

Setting Boundaries with Other Departments

Marketing work overlaps with sales, product, and customer success.

Leave those boundaries vague and you get disputes over credit when things go well, and over blame when they do not.

The boundary with sales causes the most friction. Writing down the criteria for handing over a lead, and what happens after the handover, prevents most of it.

What to Do in the First Weeks

Newly in the role, start by establishing where things stand.

• List every live campaign, with its spend and its results side by side.
• Check who is spending how much time on what.
• Ask the sales team what they expect from marketing.

The first item alone will surface several campaigns worth stopping. Starting something new can wait until after that.

Frequently Asked Questions

How does this differ from a marketing director?

By whether you have the authority to set the total budget and the level of the target. Using a given budget optimally is the director's job; proposing to the board how much should be spent is the CMO's. Change the title without changing the authority and the role remains a directorship.

Do small companies need one?

Not as a formal title, but someone has to make these decisions. It is often the founder, and that is fine. The problem is when nobody is making them.

What to watch when hiring a CMO externally

Put the scope of authority in writing first. How much budget can they commit alone, and can they change the team? Bring someone in while that stays vague and every decision requires a negotiation, which defeats the point of the hire.

How much hands-on work should a CMO do?

In a small team, carrying hands-on work is natural. But once the time available for decisions falls below half the week, it is time to hand some of it off. When decisions stall, the whole department stalls.

Assembling the Inputs for Decisions

Every decision above assumes you can see spend and results by campaign. When those live in separate places, each decision starts with data collection.

Xtrategy manages campaign schedules alongside budget and KPIs on a single screen. Seeing everything at once makes both the decision to stop and the decision to push faster.

Summary

• The difference from a director is not remit but whether you set the target and the resource level.
• Allocate budget on headroom, not last year's results.
• The decision to stop never comes up from the team, so the CMO makes it.
• Short of both executors and deciders, fill the decider first.
• In the executive meeting, talk about contribution to the business, not campaign progress.
• Ring-fence the long-term allocation. "Whatever is left over" never materialises.

To understand the CMO's job, look at what gets decided rather than at a list of responsibilities. Check, in your own organisation, who is making the decisions listed here. Wherever there is a blank, that is the problem.