May a Microsoft SQL Sever under MSDN be hosted on an Amazon Web Services (AWS) application server?
The usage of MSDN licenses via AWS depends on the selected form of AWS hosting. Usage is granted on dedicated hosts (EC2 Dedicated Hosts as well as Dedicated Instances), but not on multi-tenant AWS servers. In any case, the software and hardware may only be used by one customer. Access is denied for any other AWS customers.
Source: official Amazon Web Services FAQ on Microsoft (https://aws.amazon.com/de/windows/faq/), retrieved 2018-11-21