Marketing attribution for startups under 20 people for B2B SaaS in Latin America

This edition of the Growth Broker playbook is written for founders and revenue leaders at Series A–C B2B SaaS companies operating in Latin America. In this market, LATAM buyers reward hands-on partnership, local presence, and clear commercial terms, so the way you install marketing attribution has to be shaped to that reality from day one.

The under-20-person version of marketing attribution is not a diluted enterprise playbook. It is the honest answer to which activities create pipeline with different constraints: no headcount, no politics, and no time to be wrong for long.

Own it personally as a founder or lean-in operator for the first quarter. Hiring a specialist too early replaces context with process.

Pick one channel, one trigger, one message. Two of anything at this stage is too many and none of them will work.

Inside B2B SaaS, the binding constraint is almost always efficient growth under a fixed CAC ceiling, and in Latin America it is compounded by the fact that local partnership depth, not marketing spend is what actually gates growth. Marketing attribution is only useful here when it is pointed at both constraints at once.

Instrument attribution model reconciled to closed-won in a spreadsheet if you have to. Legibility beats sophistication under 20 people.

The startup-specific trap is picking a model to defend a budget instead of to learn, usually because a well-meaning advisor points at what worked at their $50m company. Ignore.

Budget rules: whatever you spend on tools, spend the same on the person operating them. Under-tooling is fine; under-humaning is not.

A working marketing attribution function at 15 people is a genuine moat — most competitors of that size do not have one, and the discipline carries forward as the company grows.

Concretely for B2B SaaS in Latin America: the SaaS teams that install this early compound category leadership inside 18 months, and one properly-installed LATAM account becomes a reference across the region. That is the reason it is worth installing marketing attribution deliberately for this market rather than importing a playbook designed for somewhere else.