AWS EC2 instances are computing services that can be used to host web services and applications. These instances belong to an Amazon virtual cloud and they can be accessed with the help of IPs in your specified range.
By default, an EC2 instance comes with just a single public IP. However, there are many scenarios where you need multiple public IPs for your web services to work.
For instance, multi-site WordPress hosting, multiple websites with SSL, high availability fail-over setup for services, network appliances like load balancer, etc. require multiple IPs. (more…)