Co-Managed vs Fully Managed IT: Which Fits Your Business?
Both models put a specialist provider behind your technology. The difference is who's already in the building. This guide breaks down when each model makes sense.
The core difference
Fully managed IT means an external provider takes complete responsibility for a business's technology - there is no internal IT function to coordinate with. Co-managed IT assumes the opposite starting point: the business already has an internal IT person or team, and the external provider's job is to reinforce specific gaps in that team's coverage.
Neither model is inherently better. The right choice depends entirely on whether internal IT capability already exists.
Signals you need co-managed, not fully managed
If your business has 1-3 internal IT staff who already understand your systems and your people, but consistently can't cover proper endpoint monitoring, Microsoft 365 security configuration, or a reliable backup and disaster recovery solution, co-managed IT is very likely the better fit. Bringing in a fully managed provider in that situation usually means duplicating work your internal team already does well, while still leaving the same specialist gaps unfilled.
How the cost structure compares
Fully managed IT typically prices around total endpoint or user count, since the provider is covering everything. Co-managed IT is usually priced around the specific scope agreed - helpdesk or network support, RMM/EDR deployment, backup and DR, or Microsoft 365 security - which often makes it meaningfully cheaper than either full outsourcing or hiring additional in-house specialists.
Can you switch models later?
Yes. Many businesses start with co-managed IT for one or two specific gaps and expand scope over time. Some eventually transition to a fully managed model as their internal team's priorities shift, headcount changes, or the business scales past the point where a small internal team makes sense. See our guide on the specific benefits of co-managed IT for more detail, or read how the scoping process works.