BYOIP allows you to bring your own publicly-routable IP address prefixes to AWS and advertise them on the internet. You can create Elastic IP addresses from your BYOIP address prefix and use them with AWS resources such as EC2 instances, Network Load Balancers, and NAT gateways. The Elastic IP addresses you create from BYOIP address prefixes work the same way as Elastic IP addresses you get from AWS. BYOIP also allows you to minimize your downtime during migration by simultaneously advertising your IP address prefix from AWS and withdrawing it from the current location.
If your applications are using trusted IP addresses that your partners and customers have whitelisted in their firewalls, you can now move these applications to AWS without requiring your partners and customers to change their IP address whitelists. BYOIP is also useful for applications that rely on IP address reputation to allow traffic from your endpoints to reach intended recipients, such as commercial email services. Some legacy applications have hard-coded IP address dependencies. Bring Your Own IP enables you to migrate such applications to AWS with minimal disruptions.
There is no additional charge to use the BYOIP feature. Also, you don’t have to pay for Elastic IP addresses that you create from BYOIP address prefixes.
For more information about this feature, visit the BYOIP documentation.