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2. Service-level agreement - Wikipedia

   en.wikipedia.org/wiki/Service-level_agreement

   Service level agreements are also defined at different levels: Customer-based SLA: An agreement with an individual customer group, covering all the services they use. For example, an SLA between a supplier (IT service provider) and the finance department of a large organization for the services such as finance system, payroll system, billing ...

3. Service-level objective - Wikipedia

   en.wikipedia.org/wiki/Service-level_objective

   A service-level objective (SLO), as per the O'Reilly Site Reliability Engineering book, is a "target value or range of values for a service level that is measured by an SLI." [1] An SLO is a key element of a service-level agreement (SLA) between a service provider and a customer. SLOs are agreed upon as a means of measuring the performance of ...

4. Incident management - Wikipedia

   en.wikipedia.org/wiki/Incident_management

   'Normal service operation' is defined here as service operation within service-level agreement (SLA). It is one process area within the broader ITIL and ISO 20000 environment. ISO 20000 defines the objective of Incident management (part 1, 8.2) as: To restore agreed service to the business as soon as possible or to respond to service requests. [14]

5. ITIL security management - Wikipedia

   en.wikipedia.org/wiki/ITIL_security_management

   The security agreements paragraph in the written agreements between a service provider and the customer(s) that documents agreed service levels for a service. Underpinning contracts A contract with an external supplier covering delivery of services that support the IT organisation in their delivery of services.

6. Operational-level agreement - Wikipedia

   en.wikipedia.org/wiki/Operational-level_agreement

   An operational-level agreement (OLA) defines interdependent relationships in support of a service-level agreement (SLA). [1] The agreement describes the responsibilities of each internal support group toward other support groups, including the process and timeframe for delivery of their services.

7. High availability - Wikipedia

   en.wikipedia.org/wiki/High_availability

   For example, electricity that is delivered without interruptions (blackouts, brownouts or surges) 99.999% of the time would have 5 nines reliability, or class five. [10] In particular, the term is used in connection with mainframes [11] [12] or enterprise computing, often as part of a service-level agreement.