Co-Managed IT vs Fully Managed IT: Which Model Fits Your Team?
Compare co-managed IT with fully managed IT services. Learn the differences in control, cost, and collaboration to find the right support model for your business.
Co-Managed IT
Co-managed IT is a partnership model where an external MSP augments your existing internal IT team, filling skill gaps and providing overflow capacity while your team retains control.
Advantages
- Your IT team keeps control of strategy and priorities
- Fill specific skill gaps (security, networking, cloud) on demand
- Scalable support — adjust MSP scope as needs change
- Knowledge stays in-house while gaining external expertise
Limitations
- Requires a competent internal IT team to coordinate
- Shared responsibility can create gray areas and finger-pointing
- Communication overhead between internal and external teams
- May cost more than fully managed for comparable coverage
Best For
Businesses with an existing IT team of 2+ that needs specialized expertise, after-hours coverage, or additional capacity for projects without hiring more full-time staff.
Fully Managed IT
Fully managed IT outsources your entire IT function to an MSP who handles everything — helpdesk, infrastructure, security, strategy, and vendor management — as your virtual IT department.
Advantages
- Complete IT coverage with predictable monthly cost
- No need to recruit, train, or retain IT staff
- Access to a full team of specialists across all IT domains
- MSP handles vendor relationships and procurement
Limitations
- Less direct control over IT priorities and timing
- Institutional IT knowledge resides with the MSP
- Response times governed by SLA tiers, not hallway requests
- Changing MSPs requires significant knowledge transfer
Best For
Businesses with no internal IT team, companies with 10-200 employees that cannot justify a full IT department, and organizations that want predictable IT costs.
Head-to-Head
Key Differences
How Co-Managed IT and Fully Managed IT compare across critical factors.
Internal IT required
Co-Managed IT
Yes — existing team needed
Fully Managed IT
No — MSP is the team
Control level
Co-Managed IT
High — your team leads
Fully Managed IT
Moderate — shared with MSP
Scope
Co-Managed IT
Selective — fill gaps only
Fully Managed IT
Comprehensive — everything included
Cost model
Co-Managed IT
$50-$100/user/month (supplemental)
Fully Managed IT
$100-$200/user/month (all-inclusive)
Best for company size
Co-Managed IT
50-500 employees
Fully Managed IT
10-200 employees
Vendor management
Co-Managed IT
Shared or internal
Fully Managed IT
MSP handles all vendors
Our Verdict
Fully managed IT is the right choice for businesses without an internal IT team or those wanting comprehensive, predictable IT support. Co-managed IT is ideal for organizations that have internal IT capability but need specialized expertise, additional capacity, or 24/7 coverage. Summit DNC offers both models — from fully managed IT that acts as your complete IT department to co-managed partnerships that augment your existing team with enterprise-grade tools and expertise.
Common Questions
Frequently Asked Questions
How do I know if I need co-managed or fully managed IT?
Ask two questions: (1) Do you have at least 2 competent internal IT staff? If no, fully managed is the right choice. (2) Does your IT team have bandwidth for day-to-day operations but needs help with specialized projects or after-hours support? If yes, co-managed fills the gap. Co-managed works when you have a foundation to build on; fully managed replaces the foundation entirely.
Can I switch from fully managed to co-managed later?
Yes — this is a common progression. Many businesses start with fully managed IT, then hire an IT director or small team as they grow, and transition to co-managed to leverage both internal knowledge and external expertise. Summit DNC supports both models and can help you transition smoothly in either direction.
What does the SLA look like for co-managed IT?
Co-managed SLAs define which responsibilities belong to your team and which belong to the MSP, plus response time targets for each. Typical split: your team handles Tier 1 helpdesk and day-to-day operations, while the MSP handles escalations, after-hours support, infrastructure, and security. Clear responsibility matrices prevent gaps.
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