Assign Static IP (Elastic IP) & Configure DNS Records

AWS calls static IP addresses Elastic IPs. Unlike standard public IPs, these persist even if you stop and start your instance.

1. Log in to the AWS Management Console.
2. Navigate to the EC2 Dashboard.
3. In the left sidebar, under Network & Security, select Elastic IPs.
4. Click the orange Allocate Elastic IP address button.
5. Keep the default settings (Amazon's pool of IPv4 addresses) and click Allocate.

Now that you own the IP, you need to attach it to your specific running server.

1. Select the newly allocated IP address checkbox.
2. Click the Actions dropdown menu and select Associate Elastic IP address.
3. In the Instance field, search for and select your running EC2 instance.
4. (Optional) Check "Allow this Elastic IP address to be reassociated" if you plan to move it later.
5. Click Associate.

Note: Your EC2 instance's previous public IP will be released immediately. If you were connected via SSH, your connection will drop, and you must reconnect using the new Elastic IP.

To make yourdomain.com point to your server, you need to add an A Record in your DNS provider settings (e.g., Route 53, GoDaddy, Namecheap).

If you also want www.yourdomain.com to work, create a second record: