Amazon Elastic Compute Cloud (Amazon EC2)
The Amazon Elastic Compute Cloud (Amazon EC2) is a Web-based service that allows business
subscribers to run application
programs in the Amazon.com computing environment. The EC2 can serve as a practically unlimited
set of virtual
machines.
To use the EC2, a subscriber creates an Amazon Machine Image (AMI) containing the operating
system, application programs and configuration settings. Then the AMI is uploaded to the Amazon
Simple Storage Service (Amazon S3) and registered with Amazon EC2, creating a so-called AMI
identifier (AMI ID). Once this has been done, the subscriber can requisition virtual machines on an
as-needed basis. Capacity can be increased or decreased in real time from as few as one to more
than 1000 virtual machines simultaneously. Billing takes place according to the computing and
network resources consumed.
This was last updated in August 2010
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