AWS now offers the ability to easily switch between AWS provided licenses and bring your own licenses (BYOL) for Windows Server and SQL Server workloads using AWS License Manager. License switching capabilities can be used as your business and licensing needs evolve. Changing the license type associated with your instance will still retain the application, instance, and networking configuration associated with the workload, saving your time and effort. You will be billed per the new license type from the next billing second. As an optional flexibility, AWS will also provide the ability to change the tenancy from Shared to Dedicated or vice-versa.
Source:: Amazon AWS