the microsoft services provider license agreement (spla) is a licensing program that provides a hosting offer to service providers and isvs to lease or rent licenses of microsoft products on a monthly basis, and to provide hosting services and applications to the end customer. if you require 2 licenses this month, you pay two licenses, but if next month you use 30, then you will pay 30 and then you can go back and pay only the 2 initial licenses or the amount you need. with spla, microsoft is investing in the success of their channels and treating the software as a service “pay-for-what-you-use” allows them to increase their flexibility, accelerate profitability and establish a recurring revenue model to expand business.