When using Elastic IP addresses, what is a primary benefit?

The primary benefit of using Elastic IP addresses is that they never change. Elastic IP addresses are static IP addresses designed for dynamic cloud computing. When you associate an Elastic IP address with an Amazon Elastic Compute Cloud (EC2) instance, that address remains the same even if you stop and then start the instance again. This persistence is particularly beneficial for applications that require a consistent endpoint, such as those involving API calls or web services, allowing DNS records to map to a fixed IP.

Having a static IP prevents issues often associated with dynamic IP assignments, such as needing to update DNS configurations every time an instance is stopped or restarted. This consistency contributes to more reliable and easily maintainable cloud applications.