Amazon Elastic Compute Cloud (also known as “EC2”) allows users to rent computers on which to run their own computer applications. EC2 allows scalable deployment of applications by providing a web service through which a user can boot an Amazon Machine Image to create a virtual machine instance containing any software desired.
A user can create, launch, and terminate server instances as needed, paying by the hour for active servers, hence the term “elastic”. EC2 provides users with control over the geographical location of instances which allows for latency optimization and high levels of redundancy. For example, to minimize downtime, a user can set up server instances in multiple zones which are insulated from each other for most causes of failure such that one backs up the other.
Amazon.com provides EC2 as one of several web services marketed under the Amazon Web Services (AWS) brand.