Читать книгу System Reliability Theory - Marvin Rausand - Страница 15

A service is provided by a person, an organization, or a technical item to a person or a technical item. The entity providing the service is called a service provider, and the entity receiving the service is called a customer. Services can be provided on a (i) continuous basis (e.g. electric power, computer networks), (ii) according to a timetable (e.g. bus, rail, and air transport), or (iii) on demand (e.g. payment by debit cards).

Many services are provided by a single service provider to a high number of customers. A customer considers the service to be reliable when she receives the service (e.g. electric power) with sufficient quality without outages. We define service reliability as follows: