
The concept of Elastic IP (EIP) and Elastic Block Storage (EBS) was initially introduced by Amazon EC2 as a way to decouple the resources assigned to a cloud user from his utilization. In other words, as a cloud user, you can reserve an elastic resource and assign it to one of the VMs you own, but you can also reassign it to a separate VM whenever you need (for example, when you need to replace your VM with a new one).



