Note:
Error connecting to the EC2 instance:
Case 1: Verify that there is a rule that allows traffic from your computer to port 3389 (RDP).
Case 2: If the security group configured during the EC2 installation has a rule that allows inbound traffic from a single IP address, this address may not be static if your computer is on a corporate network or if you are connecting through an internet service provider (ISP). Instead, specify the range of IP addresses used by client computers. If your security group does not have a rule that allows inbound traffic, add a rule to your security group. For detailed troubleshooting tips, please click here.
Steps for database migration to MS SQL in AWS cloud.