According to Gartner the software as a service (SaaS) is a software that will be owned and is made from one or more providers.In most cases, software is available as a web application or Terminal Services. In the first case, the hardware vendor to install the application and no client software required other than a Web browser. In the latter case, the distinction is a precondition for clients, a client application is downloaded, but the core of the system is held by the supplier. Benefits of SaaS

These facts together mean big savings for consumers. An initial license fee and hardware requirements, lack of capital expenditure can be significantly reduced. It is also easier to plan to spend time and friendly. The actual cost of ownership (TCO) at a particular time and in the future depending on the number of applications is no longer busy. Reach and flexibility of this model particularly important for companies in today's economy.

As a software provider that offers SaaS model is equally important benefits. Initially lower, but much more predictable recurring revenue and budget more effectively and provide the ability to zoom. The hosting of the software is also very easy to maintain and support. All improvements are limited to the environment and have an immediate impact for all users. In addition, direct access to the records of applications to facilitate correction of errors. Finally, SaaS can be difficulties in delivering Reconstruction was a time when companies and their IT budget freeze, so they can not afford the cost inflexibility of model-based software EULA.

These benefits clearly the market leaders and researchers are confirmed by the success of the optimistic predictions. All parts of the economy against the negative growth forecasts, the global SaaS market in 2009 30% (Gartner) and 40% (IDC) is expected to grow. Billing and other challenges The positive aspects of SaaS software vendors are undisputed. However, a number of questions to be addressed before an application can be offered in this model.

All software as a service provider billing the inevitable challenge is facing the manufacturing process. While sales of traditional intellectual property rights necessary to elaborate the basic license and management agreements simplify billing EULA usually an assortment of long-term "pay per use" model and the maintenance of proper management of the frequency of recurring transactions that are subject Engine and disposal, as well as a variety of ways. This additional analysis and investment must mean to the law's provisions.