Warranty

Warranty addresses the question 'Does the service perform well enough?' It ensures the service meets non-functional requirements: it's available when needed, performs adequately, is secure, and can recover from disruption. Warranty complements utility — together they define the value of a service. A service with excellent utility but poor warranty (unreliable, insecure) fails to deliver value, and vice versa. SLAs typically define warranty requirements: 99.9% availability, sub-second response time, RPO of 1 hour, etc.