A fractional CMO is a senior marketing executive who works with multiple companies on a part-time or contract basis — providing strategic leadership without the cost of a full-time hire. For Series A–B startups that need CMO-level thinking but aren't ready for a $200–400K/year full-time hire, a fractional CMO provides roadmap, team leadership, and board-level reporting at 20–40% of the cost. The best fractional CMOs come with deep vertical expertise and a network of specialists.
For example, a Series A startup might engage a fractional CMO for 2 days per week at $15–25K/month — getting marketing strategy, hiring oversight, board slides, and channel prioritization that would cost $35K+/month fully loaded as a full-time hire.
Fractional CMO is our flagship service — we've embedded senior marketing leadership in 40+ startups, from seed stage through Series C.
Related Terms
Relevant Cactus Services
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Book a free strategy call →Embedded Agency
An embedded agency model means the agency team functions as an extension of your internal marketing team — not a vendor, but a partner with deep context, shared Slack channels, and attendance in team standups.
Retainer
A retainer is a monthly fee paid to an agency or consultant for ongoing services — buying a defined scope of work or number of hours each month.
Performance Marketing
Performance marketing is any advertising model where payment is tied to measurable results — cost per lead, cost per acquisition, revenue share — rather than flat media fees.
OKRs (Objectives and Key Results)
OKRs is a goal-setting framework: each Objective is an ambitious qualitative goal, supported by 2–5 Key Results that are specific, measurable, and time-bound.
KPIs (Key Performance Indicators)
KPIs are the specific metrics used to measure performance against business goals.
Marketing Attribution
Attribution is the process of assigning credit to marketing touchpoints that contributed to a conversion or sale.