However, this is the case where an agreement on the level of service may take the form of a legal or informal contract or be part of a contract. Thus, a service level contract may be included in a contract, but a contract is not necessarily a service level contract. Many companies prefer SLAs that are not part of the contract itself, as this allows for a simpler review. Conclusion In summary, it is important for the parties to focus on the definition of services and the level of service, so that outsourcing agreements are successful. For example, internet service providers and telecommunications companies will generally include service level agreements under the terms of their contracts with customers to define service levels of service level sold in plain language. Wikipedia Since the late 1980s, SLAs have been used by fixed-line operators. Today, ALS is so widespread that large organizations have many different ALSs within the company itself. Two different units in an organization script an ALS, one unit being the customer and another the service provider. This helps maintain the same quality of service between different units of the organization and in several sites within the organization. This internal ALS script also compares the quality of service between an internal service and an external service provider.  In a corporate organization, the legal department focuses more on the outsourcing agreement, while the IT department focuses more on the service level agreement. Market conditions, business requirements and technological improvements continue during the duration of an outsourcing contract.
ALS must be adapted to the emergence of new technologies and improvements. Regular revisions and adjustments should be made to reflect industry standards. If you first create an offer, indicate the SLA type for which this offer is intended. Once an offer has been published and included in an ALS, alS is provided as internal, external or outsourced ALS based on the selected ALS type. If you create an offer, you have the option to include one or more SLAs previously provided in the offer. If this offer is then included in a new ALS, this ALS is called ALS on several levels in an ALS relationship, which provides end-to-end representation of the entire service level agreement. It is also important to remember that services need to be flexible over time. Technology will obviously change, especially with regard to IT outsourcing. Lack of flexibility is also one of the most common reasons for outsourcing. An overly detailed service description can hinder this flexibility. Flexibility also requires good procedures to control changes or change management procedures.
The main point is to create a new level for the grid, cloud or SOA middleware, capable of creating a trading mechanism between service providers and consumers. For example, the EU-funded Framework SLA@SOI 7 research projectexplores aspects of multi-level, multi-supplier slas within service-based infrastructure and cloud computing, while another EU-funded project, VISION Cloud, has delivered results in terms of content-based ALS.