Short answer. Pick a fractional PMM when you need a plan and momentum in the next 90 days. Pick an agency for volume in one channel. Hire full time once the motion is proven and needs a daily owner.
| Fractional PMM or GTM lead | Agency | Full time hire | |
|---|---|---|---|
| Time to start | Days. Kickoff in the first week. | Weeks. Scoping and onboarding first. | Months. Hiring, notice period and ramp. |
| Who does the work | The person you spoke to. | Often a junior team behind an account lead. | One person, once they ramp. |
| Strategy and execution | Both. Plan, assets and launch. | Usually one channel or service. | Both, if you hire senior. |
| Context on your product | Deep, from interviews and sales calls. | Shallow, spread across clients. | Deepest, over time. |
| Commitment | Fixed project length, then decide. | Retainer with minimum terms. | Full salary and long term. |
| What you keep | Playbooks, assets and a trained team. | Deliverables, often not the know how. | The person, while they stay. |
| Best when | You need a plan and momentum now. | You need volume in one channel. | The motion is proven and needs an owner. |
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Common Questions
Is a fractional PMM cheaper than a full time hire?
Usually, over the first year, because you pay for a fixed project rather than salary, benefits and ramp time. The bigger saving is time: work starts in days, not months.
When should I hire full time instead?
When positioning is proven, the launch calendar is steady and you need an owner every day. A fractional lead can write the role and help you hire.
When is an agency the better choice?
When you need volume in one channel, such as paid ads or content production, and already have the strategy.