A 90-day transition playbook for Brazilian B2B mid-market companies (R$30M–R$100M) moving from agency-led to fractional-CMO-led marketing — without breaking pipeline, attribution, or customer relationships.
In the past 18 months, Brazilian B2B mid-market companies (R$30M–R$100M revenue) have been firing their marketing agencies at a higher rate than the previous five years combined. The MDDM client portfolio confirms it: 60% of new engagements in 2025-2026 started as "we want to leave our current agency, we just don't know how without breaking things."
The reasons are structural, not emotional. Agencies built for performance media (paid social, Google Ads, retargeting) are systematically failing at the strategic governance that mid-market CEOs need from their marketing function. The unit economics changed. The buyer changed. The team capacity grew. The agency model didn't.
This essay is the playbook to make the transition without paying the typical 3-6 month penalty in lost pipeline. It's been applied across 18+ MDDM engagements since 2023.
Each of these signals alone is fixable. When all three appear simultaneously, the relationship has structurally inverted — the agency is consuming more value than it creates.
If your agency invoice has crossed R$25k/month and your CAC trend chart shows steady increase or your pipeline coverage is shrinking, the math has flipped. Either they're spreading talent too thin, or they're charging for hours that don't compound into outcomes. Either way, the cost line is now an extraction, not an investment.
Healthy agency relationships have a default weekly dashboard. If you need to ask repeatedly for "the actual ROAS by channel" or "the pipeline source breakdown," the agency is either hiding the number or doesn't know how to calculate it. Both are exit signals.
When the quarterly review presents the same "expand awareness," "test new channels," "double down on what's working" recommendations every time — that's not strategy, it's a template. Mid-market B2B in Brazil requires specifics: which CFO concern this quarter, which buyer segment, what number we're committing to. Generic = expendable.
Resist the urge to do it faster. The 90-day pace exists because pipeline takes 60-120 days to recover from any major disruption in attribution, account access, or stakeholder communication.
Phase 1 happens before the agency knows anything. Activities:
On day 30, you have the conversation. Calm, written, with notice. Activities:
Last 30 days. Agency works in parallel mode, fractional CMO leads. Activities:
A common mistake: companies fire the agency, hire a fractional CMO, and expect them to absorb everything. That's how good fractional CMOs become bad mid-level marketers — overloaded with execution they shouldn't be doing.
The correct structure is two layers:
Fractional CMO. Strategy, governance, KPI ownership, weekly cadence with CEO and CFO. Decides what to execute and which vendor executes it. Does NOT execute campaigns directly.
In-house team (2-4 mid-level) + 1-2 specialized boutiques for paid media and creative. Smaller than the agency footprint, but tightly briefed by the fractional CMO.
Result: same coverage, ~50% less cost, but with one named person responsible for the number — not a rotating agency account manager.
Limited slots per month. In 30 minutes, I'll give you an honest read on whether the transition is the right call — or whether the agency is the wrong problem to focus on.