Co-managed IT vs fully managed IT: which model fits your company?

Side by side

	Co-managed IT	Fully managed IT
Who you employ	One or more IT staff	No IT staff, or a coordinator
Day-to-day user support	Mostly internal; provider for overflow and cover	Provider
Monitoring, patching, security tools	Provider, with internal visibility	Provider
Business applications knowledge	Internal team	Provider learns and documents it
Escalation depth (network, cloud, security)	Provider	Provider
Leave and sickness cover	Provider covers the internal team	Built into the provider's team
Strategy and budget	Shared; internal lead owns decisions	Provider advises; you decide
Main risk	Unclear split between teams	Less business knowledge onsite
Cost shape	Internal salaries plus a smaller provider fee	Provider fee only

A sample responsibility matrix

R = does the work, A = approves, I = informed. Adjust to your team; the point is to write it down.

Task	Internal IT	Provider
Desk-side support and new starters	R, A	R (overflow, leave cover)
Monitoring and alerts	I	R
Patching servers and devices	A	R
Endpoint and email security	I	R
Backup checks and restore tests	A	R
Firewall and network changes	A	R
Business application support	R	R (escalation)
Microsoft 365 administration	R	R (security baseline, escalation)
IT budget and roadmap	R, A	R (advice)
Supplier and licence management	A	R

Co-managed usually fits when

• You have a capable IT person who knows the business but is alone or overloaded.
• You need security tooling and monitoring your team does not have time to run.
• You want cover for leave without hiring a second person.
• Your internal team wants an escalation partner for network, cloud and security work.

Fully managed usually fits when

• Nobody in the company has IT as their main job.
• Your IT person is leaving and you are deciding whether to replace them.
• You run several sites or entities and want one standard owned by one team.

What to agree before you start

• The written responsibility matrix, reviewed each quarter.
• Shared tools: one ticket system both teams can see, one documentation store.
• Admin access for named people on both sides, with MFA, and access removed when people leave.
• Change approval: who can approve firewall, Microsoft 365 and server changes.
• SLA targets for the provider's part (see our IT SLA buyer's guide).
• Support hours: business hours, with agreed out-of-hours cover.

Cost

Co-managed fees are usually lower than fully managed for the same users because the provider does less day-to-day support, but you keep internal salaries. Use the in-house vs outsourced cost framework to compare all three options, and the managed IT cost guide for published ranges.

Where Missan helps

Missan runs co-managed IT alongside internal teams and fully managed IT where there is no team, across teams in 3 countries, with 5,000+ clients served since 2004. We agree the responsibility split in writing, share our tooling with your team, and keep your accounts and Microsoft tenant in your name. See managed IT services.

Related Missan services

• Managed IT services
• IT outsourcing in the UAE
• Managed cybersecurity and MDR
• IT consulting and virtual CIO

Frequently asked questions

What is co-managed IT?

Co-managed IT means your internal IT staff and an outside provider share the work under a written split. Typically the internal team handles local users and business systems, and the provider supplies monitoring, security tooling, patching, backup checks, escalation depth and cover during leave.

Who is responsible when something goes wrong in a co-managed setup?

Whoever the responsibility matrix says. That is why a co-managed contract needs a clear RACI listing each task, who does it, who approves and who is informed. Without one, issues fall between the two teams.

Will co-managed IT replace our IT staff?

No. The point is to make your internal team more effective: fewer routine tasks, better tools and someone to escalate to. Many companies use it to keep a valued IT person from burning out.

Can we start co-managed and move to fully managed later, or the other way?

Yes. Because both use the same tools and documentation, the split can be changed at renewal as your team or needs change.

Does Missan offer co-managed IT?

Yes. We run fully managed and co-managed IT, and agree the responsibility split with your team in writing before we start.

This guide is general information for planning, not legal or tax advice. Regulations and deadlines change; confirm the current position with the official source linked in the text and with your own advisers. Last reviewed 28/10/2026.