Reliability

Reliability is a measure of the probability that a product will not malfunction or fail within a specified time period.

Definitions

According to Marketing Management by Keller and Kotler (15th edition),

Reliability. A measure of the probability that a product will not malfunction or fail within a specified time period.

According to Managing Quality by Foster (6th edition),

Reliability. Propensity for failure of a product or component.

According to Juran's Quality Handbook by Defeo (7th edition),

Reliability. The ability of a product to perform a required function under stated conditions for a stated time; or more simply, the chance that a product will work for the required time. In the context of Lean, the ability to supply a product or service on or before the date promised.

According to the HRBoK Guide,

Reliability. Being dependable or consistent. Having the same results after many tests.

According to the ITIL Foundation 4e by Axelos,

Reliability. The ability of a product, service, or other configuration item to perform its intended function for a specified period of time or number of cycles.