A service level agreement (SLA) is the part of a service contract that sets out the measurable standards a provider commits to deliver, such as how quickly it responds to a request, how quickly it resolves faults and how much of the time a system is available. It makes expectations explicit and testable.
SLAs usually classify issues by priority. A site that cannot take payments might be treated as critical with a short response target, while a request to add a new user might sit at a lower priority with a longer target. Response time measures when someone starts work, while resolution time measures when the issue is fixed. Availability is often expressed as a percentage of time over a period, and reports show whether targets were met.
Retail and hospitality operators use SLAs to match support to trading reality. A cafe that is busiest at breakfast needs cover that begins before opening, and a retailer needs priority treatment during sale periods. Contracts may also describe remedies, such as service credits, when targets are missed.
Pitfalls include vague definitions, such as a promise to respond without saying what that means, and targets that cover only business hours when the venue trades on weekends. Check how the clock starts and stops, what is excluded, how performance is measured and who verifies it. A tight SLA is of little use if the provider lacks the staff or parts to meet it.
A clear SLA gives both sides a shared yardstick, reduces disputes and helps a business plan around the risk of downtime.