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What’s the difference between a public IP and an elastic IP in AWS EC2?

When you launch an EC2 instance, you recieve a Public IP address by which that instance is reachable.


Once you stop that instance and restart the you get a new Public IP for the same instance’s.

So, Public IP get’s changed everytime for an instance after stop/start.

To overcome with this problem, we attach an Elastic IP to an Instance which doesn’t change after you stop / start the instance as many times.

Advantage of Having Elastic IP

-> It is kind of static IP for your Instance.

-> Doesn’t change after stop/start.

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