Account-based marketing for Series B companies: scaling without breaking for PE-backed portfolio companies in Latin America

This edition of the Growth Broker playbook is written for operating partners and portfolio CEOs inside private equity operating in Latin America. In this market, LATAM buyers reward hands-on partnership, local presence, and clear commercial terms, so the way you install account-based marketing has to be shaped to that reality from day one.

Series B is the stress test for account-based marketing. What worked at fifteen people fails at fifty unless the operating rhythm is deliberate.

The Series B move is to separate the model owner from the operators. One senior human owns strategy, pipeline created inside the named-account list, and the weekly review; a small team runs the machine.

Add a second geography or segment only when the first one is producing a defensible number for two full quarters. Not before.

Inside PE-backed portfolio companies, the binding constraint is almost always predictable execution against a hold-period thesis, and in Latin America it is compounded by the fact that local partnership depth, not marketing spend is what actually gates growth. Account-based marketing is only useful here when it is pointed at both constraints at once.

Governance appears at Series B — that is fine, provided it accelerates rather than slows. The test is whether reviews still make decisions or just distribute updates.

The Series B failure mode of account-based marketing is confusing ABM with lead scoring on inbound MQLs, amplified by headcount. Fix the root cause; do not paper over it with more people.

Compensation begins to matter now. Pay operators on pipeline created inside the named-account list outcomes, not on effort. Effort-based comp at Series B produces theatre.

A well-run account-based marketing function at Series B is the moat that survives to Series C. Companies that skip this discipline burn through raises trying to buy it back.

Concretely for PE-backed portfolio companies in Latin America: the portfolio companies that install this hit the next value-creation milestone on schedule, and one properly-installed LATAM account becomes a reference across the region. That is the reason it is worth installing account-based marketing deliberately for this market rather than importing a playbook designed for somewhere else.