Microsoft have announced that from February 1, 2017, Pay-As-You-Go (PAYG) Azure will no longer be available via the MPSA (Microsoft Products and Services Agreement) to new customers.
Organisations looking to begin purchasing Azure will be directed towards the CSP (Cloud Solution Provider) program for their Azure needs. Organisations already purchasing PAYG Azure via an MPSA agreement will be able to continue to do so.
The full post form Microsoft can be found here – https://blogs.technet.microsoft.com/volume-licensing/2017/01/10/modern-licensing-for-digital-transformation/
If you have any questions, let me know in the comments.