Last name: Riley. Tweet. This famous surname can be either English or Irish. It is found in both countries in several and overlapping spellings including Riley, Ryley, Reily, Reely and Reilly, as well as the pure Gaelic McReilly, O'Reilly and O'Ralilly.
Best Answer: A service level agreement (frequently abbreviated as SLA) is a part of a service contract where the level of service is formally defined. In practice, the term SLA is sometimes used to refer to the contracted delivery time (of the service) or performance. Source(s): rookethorne Â· 8 years ago.
Answer Wiki. 5 Answers. , Passionate for Technology. An SLA a.k.a. Service-Level Agreement is defined as a contract between customer and the service provider that outlines all the performance standards and the criteria that the service provider is obligated to fulfill.