In addition to the known benefits that SDN brings to the spectrum, software licensing is evolving and reflecting the way organizations and individuals use software. For companies that need software to maintain market share, the software licensing model can have a significant impact on the return on software investments. Global, technical and economic requirements have an impact on licensing in many ways, making it increasingly difficult to create licensing models and techniques that reflect and meet the needs of organizations in the SDN/5G era. Software licensing is a procedure by which a vendor or user buys, installs and uses software (i.e. network services) on a computer or network in accordance with a software provider`s licensing agreement. The software license aims to protect both the supplier`s investments by minimizing the risk of severe piracy and the company`s investments, minimizing the risk of reviewing fines by soft piracy. Utility computing weighs on traditional licensing models. The pro-user license is not feasible in these situations, and vendors may not be happy if their pro-processor licenses are used to serve multiple customers instead of one. In this context, ALS management allows the correlation between NS and licensing systems. 5GTANGO offers a service-based licensing model that links a license to a particular customer and a pending NS, also indicating the number of NS instances allowed. The model offers three types of licenses: (a) the trial version, which supports a limited trial period of the desired NS prior to the purchase of the license; (b) the public, which is not subject to impeding litigation restrictions, and (c) the private sector, which considers it mandatory to purchase a licence prior to the proceeding of an NS. It should be noted that licensing is offered “as a service” and is included in the ALS made available [6].
One of the central objectives of 5G technologies and end-of-network software (SDN) is to provide QoS (quality of service) guarantees. These guarantees reflect the requirements arising from agreements between customers and service providers, corresponding service level agreements (SLAs). While conventional ALS, for example, included aspects related to the availability of “five 9s” in the data center or five minutes of downtime per year [1], a 5G-piloted ALS has additional aspects related to the infrastructure and services provided. B, such as the availability of 5 9 and “2 seconds for the provision of a new service instance.” But what is ALS? An ALS is a contract between the network service provider (NS) and the customer, which emphasizes the responsibilities of each party while defining the performance standards to be met by the provider [2]. THE SLAs note customer expectations regarding the performance and overall quality of the service provider. In recent years, SLAs have set a service provider`s expectations, set penalties for lack of targets and, in some cases, bonuses for exceeding them.