In a service-based ALS, all clients working with the service provider benefit from similar conditions. For example, a cable TV provider displays the services it offers to all its customers, as well as the additional services or channels available as part of the package. A Service Level Contract (SLA) is a contract between a company and its customer that describes the details agreed upon by both parties in a transaction. The types of ALS an organization can use depend on many important aspects. While some are geared towards groups of individual customers, others discuss issues of interest to entire companies. This is because the needs of one user differ from those of another. Below you will find a list of the types of SLAs used today by companies, and how each of them is used for certain situations: Without a service level agreement, it is not known what will happen if one of the parties does not hold until the end of the good deal. For example, a telecommunications operator`s service target is to answer all support calls in 5 seconds, and calls are answered in only 5 minutes. You can easily say that they never promised that calls will answer within 5 seconds if there is no agreement on the level of service. An ALS allows for transparency about what the service level objectives are and what happens if the required objectives are not met.
With a service level contract, both parties are protected. There are many ways to write ALS. Below is a table of materials (TOC) that you can use as a start-up model for writing your own service level agreements. Perhaps most of a service level contract comes next and is called a service agreement, which contains many key components for which the service provider assumes responsibility. Topics covered in this section include: A multi-level ALS divides the agreement into different levels specific to a number of customers who use the service. For example, an as-a-service software provider can offer basic services and support to all customers who use a product, but it can also offer different price ranges when purchasing the product, which imposes different levels of service. These different levels of service are included in ALS on several levels. The ALS will also contain a section detailing exclusions, i.e. situations in which ALS guarantees and penalties for non-compliance do not apply. The list may contain events such as natural disasters or terrorist acts.
This section is sometimes referred to as a force majeure clause to excuse the service provider for events that are not subject to its proper control. Because applications are moved from dedicated hardware to the cloud, they must reach the same level of service, or even more sophisticated than conventional installations. SLAs for cloud services focus on data center features and more recently include network features (see Carrier`s Cloud) to support end-to-end SLAs.  For the specified measures to be useful, it is necessary to define an appropriate starting base, specifying the measures at reasonable and achievable performance levels. It is likely that this baseline will be redefined throughout the participation of the parties to the agreement, using the procedures defined in the “Periodic Review and Amendment” section of the ALS. For businesses and consumers, it is essential for the proper functioning and assistance of ensuring that service level agreements (SNAs) are obtained for certain products. Naomi Karten explains in her work on establishing service level agreements: “A service level contract is a formally negotiated agreement that helps identify expectations, clarify responsibilities and facilitate communication between two parties, usually a service provider and its customers.” As a result, ALS serves as a communication and conflict mitigation tool and as a document for managing expectations as a whole.