Could you explain what a Service Level Agreement (SLA) is?

A Service Level Agreement (SLA) is a formal contract between a service provider and its customer that defines the expected level of service quality and availability.

The SLA describes specific metrics and parameters, such as:

• Service response time
• Availability (uptime) in percentage
• Recovery time after failures
• Supported support service hours
• Maximum allowable errors or failures

If the provider does not meet the SLA conditions, compensation or penalties are usually provided.

For example: for a website, an SLA might guarantee 99.9% uptime, which means the site can be unavailable for no more than approximately 8.76 hours per year.

The SLA helps establish transparent expectations and responsibilities between parties, and also serves as a basis for monitoring and improving service quality.