Quick answer

There is no universally correct staffing model. Choose based on the work, required expertise, continuity, implementation capacity and how much management the business can realistically absorb.

The most useful comparison is role by role: who plans, implements, creates, measures, reports, approves and owns the result?

What I would check first

I would list the actual recurring tasks and one-time projects, estimate the skill depth required and identify what the business can do internally. Then I would identify gaps in ownership rather than simply choosing a supplier category.

I would also check how quickly work needs to happen. A business needing occasional strategic decisions may not need the same structure as one running daily acquisition campaigns.

Decision framework

Compare options on breadth, specialist depth, continuity, speed, internal management time, implementation capacity and knowledge transfer. Agencies can provide breadth, specialists can provide focused expertise, consultants can provide diagnosis and direction, and employees can provide embedded continuity.

A hybrid model can make sense when the business has internal execution capacity but needs specialist oversight for measurement, paid media or SEO. The key is explicit ownership and handoffs.

Implementation steps

Write a scope of work, define deliverables and decision rights, establish reporting expectations and identify who owns accounts, data and assets. Start with the smallest engagement that can answer the real operational question.

Review the relationship based on outcomes and quality of decision-making, not just activity volume. Replace vague deliverables with measurable responsibilities.

Common mistakes

Do not choose only on hourly rate, buy a broad service bundle the business will not use or assume outsourcing automatically transfers accountability.

Another common failure is unclear ownership: several people touch campaigns and analytics, but nobody owns the final business result. Fix the operating model before adding more resources.

Measurement and business implications

Evaluate support using business outcomes, implementation quality, speed to decision, reporting reliability and internal capability gained. Track management overhead as a real cost.

Use the Digital Marketing Audit Checklist to identify which capabilities are actually missing before deciding who should provide them.