An SLA with an impressive availability percentage may exclude maintenance hours, critical integrations or the support needed to resolve an incident. Evaluation should start with how the service is used and what happens when it fails.
Map the critical function
Record which business journeys depend on the supplier, which hours are most valuable and how quickly damage grows. Overall uptime does not always capture the difference between an overnight interruption and failure at peak time.
Read how availability is measured
Check the measurement point, reporting window, exclusions, rounding and who determines when the incident began. Request calculation examples. Small wording choices can significantly change the actual level of protection.
Separate response from recovery
A quick first response does not mean a quick solution. Record acknowledgement time, update frequency and targets for a temporary workaround and restoration. Define a support channel and level that also apply outside normal working hours.
Connect responsibility with dependencies
Ask what happens when a subcontractor, cloud region or integration fails. The customer buys functionality, not an organisational chart of responsibilities. Critical dependencies and their limits need to be known before an incident.
Assess credits realistically
Service credits may be small compared with the actual cost of interruption and often require a claim within a short period. Do not treat them as full compensation. View them as one component alongside resilient architecture, alternative operations and insurance.
Plan for exit and data
A good SLA describes data access, export formats, transition support and the period after termination. Real protection becomes visible when the relationship becomes difficult or ends, not just when everything works.
This operational SLA review is an original supplier framework developed by DigitalNow.