title: How to safely upgrade ec2 instance type in amazon web services? m4.large to m4.xlarge?
body: <p>We have created an instance (m4.large) where we installed Windows Server 2012 r2. It is currently used as a terminal server for SAP business one software with license Remote Desktop Service per device (CAL). We made a mistake in choosing the instance type for it is recommended to use m4.xlarge for terminal servers. We would like to upgrade our instance type to resolve memory requirement issue.</p>
  
  <p>We are new to AWS and would like to seek advise on what would be our best approach. Is it safe to directly upgrade the instance? We have no concerns of downtime for now.
  We are also considering in making a snapshot first then launch it on an new and upgraded instance. We would like to ask if RDS licenses will also be migrated?
  Thanks you for your kind replies. </p>