Availability is uptime when users need the system. Reliability is correct operation without failure over time.
Availability refers to the assurance that systems, services, and data are accessible and usable when needed by authorized users. It ensures that technology functions reliably and consistently throughout its intended operational lifespan. In practice, availability is achieved.
Availability ensures systems and data are accessible and usable when needed, maintaining operational continuity and user access.
Full PathTerms™ definitionReliability refers to the ability of a system, component, or service to perform its intended function consistently and without failure over a specified period under given conditions. It is a measure of dependability, ensuring that users can count on the system to be available.
Reliability is a system's ability to perform its intended function consistently without failure over a specified period.
Full PathTerms™ definitionPeople mix up Availability and Reliability in exam questions and job posts. Knowing the difference helps you pick the right control, process, or architecture choice.
Availability is uptime when users need the system. Reliability is correct operation without failure over time.
