Availability

Topics: Reliability

Availability is the simplest building block of Reliability. This metric describes what percentage of the time service is functioning. This is also referred to as the “uptime” of a service.

A service’s reliability is not determined by raw availability numbers. It is rather perceived by users of the service as the level of their ability to use the service when they need it. For that reason, availability improvements should focus on features that impact the user experience the most.