How do I select a B2B SaaS growth marketing agency?

How do you choose a B2B SaaS growth marketing agency?

Choose a B2B SaaS growth marketing agency by applying the four-fit test: motion fit (PLG, SLG, or dual-motion), CFO-grade attribution that reconciles to CRM opportunity stages in HubSpot or Salesforce, vertical depth in your buyer's category, and cycle-matched pipeline proof from engagements that mirror your sales reality. If they can't walk your CFO through opportunity-level pipeline influence using your stack (not last-touch dashboards or hand-wavy multi-touch stories), they're not a growth partner. They're a reporting vendor. Hiring a PLG-only shop for a 9-month enterprise cycle with a seven-person buying committee means you'll optimize signup flow while deals stall in security and procurement. Disqualify anyone who can't show dual-motion proof and a reconciled pipeline view before contract.

For the deeper checklist, red flags, and gating questions to ask before your next board meeting, see our guide on how to evaluate a B2B SaaS marketing agency.