The first 90 days in a new marketing leadership role are the highest-leverage period of the job. The decisions made in that window — what to keep, what to change, who to trust, what to measure — shape every quarter that follows.
Most marketing leaders spend those 90 days in a combination of listening tours, relationship building, and eager early action. The best ones do something more deliberate.
What the First 30 Days Are Actually For
Understanding the Business Before the Marketing
The most common mistake new marketing leaders make is starting with the marketing. Before you evaluate campaigns, interrogate the agency, or redesign the reporting dashboard, understand the business: what the CEO is under pressure about, what the board has asked for, what sales is frustrated by, what the product team is building.
Marketing’s job is to serve those priorities. You can’t do that without understanding them first.
Listening to Sales Without Defending Marketing
The relationship between marketing and sales is often fraught when a new marketing leader arrives. Sales has a list of complaints. Some are valid. Some are context-dependent. All of them are data.
Sit with sales leaders and individual reps. Ask what leads look like when they’re good and when they’re not. Ask what objections come up in the first call. Ask what content would make their conversations easier. Listen without defending the previous team’s decisions.
Auditing What Exists Before Building Anything New
Run a focused audit of the current program: channel performance, tech stack, agency relationship, messaging consistency, reporting infrastructure. The audit tells you where the leverage is — and it prevents you from rebuilding something that was actually working while ignoring the things that weren’t.
What the First 60 Days Add
A Clear Diagnosis — With Evidence
By day 60, you should be able to articulate, with data, what’s working and what isn’t. Not a gut read — a documented diagnosis based on the audit, the sales conversations, and the channel performance review.
This diagnosis is the foundation for every decision that follows. Without it, strategy is opinion. With it, strategy is evidence-based — and significantly easier to get organizational buy-in behind.
Early Wins That Build Credibility
The diagnosis should surface two or three opportunities for quick, visible improvement — a channel that’s underallocated, a messaging inconsistency that’s easy to fix, a reporting gap that’s making the program look worse than it is. Fix those things in the first 60 days.
Early wins aren’t just about momentum. They’re about credibility — demonstrating to leadership, sales, and the marketing team that the new leader has a clear eye and can execute.
What Days 60 to 90 Are For
A Strategic Plan With Specific Commitments
By day 90, you should be presenting a 12-month marketing strategy with specific, measurable commitments: pipeline contribution targets by quarter, channel investment allocation with expected returns, and the milestones the team will be held to.
This presentation does more than communicate the plan. It signals that marketing is operating as a business function — making predictions, owning accountability, and setting a standard it will be held to.
The Agency Relationship Decision
By day 90, you should have a clear view of whether the current agency is the right partner for where the company is going. If they are, renew the relationship with updated goals and accountability criteria. If they’re not, the transition planning should begin now — not after another quarter of hoping the relationship improves.
Frequently Asked Questions
How quickly should a new CMO make changes?
Diagnose before you act. The first 30 days should be almost entirely listening and auditing — not building or changing. Early visible changes made without a diagnosis often fix the wrong things, create unnecessary disruption, and undermine the credibility the new leader needs to make the real changes later. Move fast on quick wins. Move deliberately on structural changes.
What should a new marketing leader’s first board presentation look like?
A summary of the audit findings, the diagnosis, and the 12-month plan with specific commitments. Not a capabilities showcase or a vision statement — a business plan. The board wants to know what you found, what you’re going to do about it, and what you’re committing to deliver. Give them exactly that.
How do I build credibility with sales in the first 90 days?
Listen more than you talk. Deliver on one thing you promised, quickly. Be specific when you describe what you’re changing and why. And never defend the previous team’s decisions — even if some of them were right. Sales credibility is built on trust, and trust is built on actions that match words. The fastest path is identifying one thing that would make sales conversations meaningfully better and making it happen within 30 days.
Should I replace the agency in the first 90 days?
Only if the audit makes a compelling, data-based case for it. Replacing an agency in the first 90 days signals decisiveness — but it also signals disruption, and the transition cost is real. If the agency has structural problems that won’t be fixed by new goals and new leadership, move quickly. If the problems are ones that better management and clearer expectations could fix, give that 90 days before the agency decision is made.
The Window That Sets Everything Else
The first 90 days aren’t just an orientation period. They’re the window in which the new marketing leader establishes their operating model, builds the relationships that will define the function, and makes the strategic bets that will define the next year.
The leaders who use that window deliberately — auditing before acting, diagnosing before prescribing, committing to specific outcomes before asking for resources — consistently outperform those who move fast on instinct.
Slow down to diagnose. Then move fast with conviction.
About the Author
Dan Enrico has spent nearly two decades doing one thing: building marketing programs that produce results senior leaders can take to their board. As Vice President of Strategy at DSM, he works directly with CMOs and marketing leaders across New Jersey and nationally to find where marketing investment is falling short, uncover where the real growth opportunity lives, and build the integrated strategy to go after it. Dan doesn’t wait to be told what to do. He shows up with a point of view, backs it with data, and stays accountable to the outcome. That’s the standard he holds himself to — and the standard every DSM client should expect.