If the service provider is taken over by another entity or merges with another entity, the client can expect his ALS to remain in effect, but that may not be the case. The agreement may need to be renegotiated. Don`t make assumptions; Note, however, that the new owner does not want to alienate existing customers, so they can choose to honor existing SLAs. Simply having service level agreements is not a guarantee that they will be respected. If an agreement is negotiated with management and then buried somewhere in a file, the person actually doing the job may not be aware of the expectations it has. It will therefore help to ensure compliance with the requirements by looking at the standards and basic measures that apply to the task. When services are purchased by an outside provider, a formal contractual agreement is reached between the institution and the service provider. ALS is used to provide the daily work details needed to support the contract. It is the starting point for contract monitoring and management and is often the source of corrective measures that could prevent a more serious contractual situation. 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.  The ALS must contain not only a description of the services to be provided and their expected levels of service, but also metrics to measure the services, obligations and responsibilities of each party, corrective measures or penalties for violations, and a protocol for adding and removing metrics. Verification of the provider`s service levels is required for the implementation of a service level agreement. If the ALS is not properly completed, the client can claim the contractually agreed compensation. Other metrics include the timing of advance notification of network changes that may affect users and general service usage statistics. SLAs are an integral part of an IT provider contract. An ALS brings together information about all contract services and their expected reliability in one document. They clearly indicate metrics, responsibilities and expectations, so that in the event of service problems, no party can plead ignorance. It ensures that both parties have the same understanding of the requirements.