SLA stands for Service Level Agreement. It is an agreement between a provider and a customer that defines service quality, measurement methods, responsibilities and remedies when commitments are not met.
SLAs are commonly used in software services, hosting, IT support and outsourced operations. To create a useful SLA, promises such as “fast support” need to be translated into specific, verifiable criteria.
What Does an SLA Include?
A clear SLA needs to define the service scope, quality metrics, measurement methods, each party’s responsibilities and remedies for breaches. Common metrics include:
Metric | Meaning | What to Clarify |
|---|---|---|
Uptime | The percentage of time the service is available | Whether it is measured monthly or over another period; whether maintenance is excluded |
Response time | The time until the support team provides an initial response | When the clock starts; what the response must include |
Recovery time | The time needed to restore the service to operation | Whether temporary restoration is acceptable |
Support hours | The hours during which requests are received and handled | Whether support is available during business hours or continuously, including days off |
A response is not the same as a resolution. A request that is acknowledged quickly may still take considerable time to resolve.
How to Create an SLA in 4 Steps
1. Define the Services and Their Impact
List the systems, functions and user groups covered by the commitments. Avoid applying the same SLA level to every service if their levels of importance differ.
For example, an order recording system may need higher priority than internal reporting. When implementing ERP for your business, identify which modules should take priority for recovery if an incident occurs.
2. Choose Measurable Metrics
Each commitment needs a target and a calculation method. For uptime, the basic formula is:
Uptime (%) = Time the service is available / Total time within the measurement scope × 100.
Assuming measurement covers an entire 30-day month with no time excluded, 99.9% uptime corresponds to approximately 43.2 minutes of unavailability. If maintenance is excluded, the result must be calculated according to the agreed scope.
Do not choose a target simply because the number is high. Balance operational needs, technical capabilities and costs.
3. Classify Incidents and Define Responsibilities
Distinguish between system-wide incidents, errors affecting a group of users and routine requests. For each level, specify response times, recovery targets and points of contact.
The customer also needs to provide error details, appropriate access permissions and someone to coordinate with the provider. For CRM systems, distinguish between an inability to access the system and an error in an individual report.
4. Agree on Monitoring and Remedies for Breaches
Define the measurement data source, when the incident clock starts, the reporting schedule and the escalation process for unresolved issues. If service credits are offered, clearly state the conditions, limits and deadline for requesting them.
Service credits do not automatically mean compensation for all losses. When subscribing to software, you can use the guide to reading an SLA before signing a contract to review these terms.
Conclusion
A good SLA does more than state numerical commitments. It must answer these questions: which services are guaranteed, how they are measured, who is responsible and what happens when commitments are not met. Start with actual operational needs, then agree on verifiable metrics.
Frequently Asked Questions
How Does an SLA Differ from a KPI?
A KPI is a metric used to evaluate operational performance. An SLA is an agreement between parties on service levels and may use metrics such as uptime or response time to determine whether commitments are being met.
Can an SLA Apply Between Departments Within the Same Business?
Yes. Businesses can use internal SLAs to agree on the support scope, priorities and response times between the IT department and the departments using its services. Responsibilities and escalation procedures need to be clearly defined.
Does 99.9% Uptime Guarantee No Data Loss?
No. Uptime reflects service availability; it does not by itself guarantee that data is preserved. Backup commitments, data recovery targets and recovery procedures need to be reviewed separately.