We have a web application running on an EC2 instance that was built using the SQL Server 2008 R2 Standard AMI.

We have since noticed that the cost of Standard is substantially higher than the cost for Web.

I cannot find any reason to indicate why it would not be acceptable to run under the Web licence of SQL Server.

Is there any way to modify / update the licencing on the stance to go to Web from Std?

I am hoping there is a simple setting / key thing that can be done, rather than having to create a new instance with the Web licence and re-installing.