Legacy application that has hard-coded static IP addresses and is running on an EC2 instance, what is the best failover solution that allows you to keep the same IP address on a new instance

Elastic IP address

Explanation:

Elastic IP addresses are static, persistent public IP addresses which can be associated and disassociated with the instance, as required.

This will provide the best failover solution that will keep same IP address on a new instance.

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