The Microsoft Service Provider License Agreement (SPLA) lets hosting companies, managed services providers, Independent Software Vendors (ISVs) and cloud-based software-as-a-service businesses to host their solutions over the internet, and on the Microsoft platform. If your company offers business and services on a
product from Microsoft, then you should consider the SPLA subscription model. You will only pay for the software 'consumed', in a program that lets you increase or decrease your usage in a monthly report.