In the late 1980s, IT outsourcing emerged, and SLAs evolved as a mechanism for managing these relationships. Service level agreements set expectations for a service provider`s performance and set penalties for not achieving targets and, in some cases, bonuses for exceeding them. Since outsourcing projects have often been tailored to a particular client, outsourcing SLAs have often been designed to regulate a particular project. « As a general rule, a contract is defined as an agreement between two or more parties, in particular a contract applicable in writing and by law. This legal document consists of the services provided, duration, costs, resources, approach, assumptions, etc. This fully informs the customer of what is in stock and holds the supplier responsible for the services provided. These forms may ask the user to indicate the date, the name of the organizations participating in the AAA, the services provided, the requirements and responsibilities of the organizations concerned, etc. SAs are thought to originate from network service providers, but are now widespread in a number of areas related to information technology. Some examples of industries that create SLAs are IT service providers and management service providers, as well as cloud and Internet service providers. Service providers need SLAs to manage customer expectations and define severity levels and circumstances in which they are not responsible for failures or performance issues. .