What Is Managed?
Managed infrastructure services cover the operational activities required to keep infrastructure running: monitoring, maintenance, patching, break-fix response, and capacity management. The scope varies by engagement: some organizations outsource only specific infrastructure layers (power and cooling, network), while others outsource the full infrastructure stack.
Remote Monitoring
24/7 monitoring of infrastructure health, performance, and availability. Proactive alerting before conditions reach critical thresholds. Incident detection and initial response.
Preventive Maintenance
Scheduled maintenance for all infrastructure components: UPS systems, cooling equipment, generators, network equipment, and servers. Manufacturer-recommended service intervals.
Break-Fix Response
On-site response for hardware failures. Parts inventory maintained for critical components. Response time SLAs aligned with workload criticality.
Patch Management
Firmware and OS patch management for infrastructure components. Patch testing, scheduling, and deployment within defined maintenance windows.
Capacity Management
Monitoring of power, cooling, and compute capacity utilization. Proactive planning for capacity additions before limits are reached.
What Stays In-House
Managed services cover infrastructure operations: not application management, data governance, or strategic technology decisions. The organization retains responsibility for application performance, data classification, compliance program management, and the technology strategy that determines what infrastructure is required.
Managed services are not outsourcing IT
When Managed Services Make Sense
Staffing gaps
The organization cannot hire or retain the specialized skills required to operate specific infrastructure components, particularly for 24/7 coverage of mission-critical systems.
New technology adoption
The organization is deploying infrastructure (AI compute, liquid cooling, high-density power) that the internal team does not have experience operating.
Cost optimization
The fully-loaded cost of internal operations (salary, benefits, training, tools, on-call) exceeds the cost of managed services for the same scope.
Focus on strategic work
The internal IT team is spending too much time on operational tasks and not enough on strategic initiatives. Managed services free the team to focus on higher-value work.
SLA Terms That Matter
Response time
How quickly the provider acknowledges an incident after it is reported. Typically 15 minutes for critical incidents, 1 hour for high, 4 hours for medium.
Resolution time
How quickly the provider resolves an incident. Varies by incident type and severity, hardware replacement may take longer than configuration changes.
Availability SLA
The uptime commitment for managed infrastructure. Typically 99.9% (8.7 hours downtime/year) to 99.999% (5.3 minutes downtime/year).
Escalation path
How incidents are escalated when the initial response does not resolve the issue. Named escalation contacts, not just a generic support queue.
Remedies for SLA breach
What the organization receives when the provider fails to meet SLA commitments. Service credits are the most common remedy, but they do not compensate for the business impact of downtime.
The Transition Process
Transitioning from self-managed to managed services requires a knowledge transfer that takes months, not days. The managed services provider must understand the organization's infrastructure, its operational procedures, its escalation paths, and the specific requirements of its workloads. Organizations that rush the transition consistently encounter service gaps in the first months of the engagement.
A well-structured transition includes: documentation of all infrastructure components and configurations, knowledge transfer sessions with the internal team, a parallel operations period where the provider shadows internal operations before taking responsibility, and a defined handover date with clear accountability transfer.