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Jinesh Varia, Technology Evangelist at Amazon.com created the following presentation to illustrate how Amazon EC2 instances are being used for creating high performance Web applications. He relies heavily on the integration technologies that unify the AWS Cloud Stack, which is shown to the right. To see a larger image of the stack, please click on it.
What is interesting about this slide deck is the detail it provides in explaining the more complex programming concepts of AWS. He provides useful insights into how Cloud Elasticity as an application platform component works through the use of detailed system-level diagrams. For example slides 21 and 22 are examples that show how Cloud Elasticity can be achieved with AWS Scaling Zones.
There are system-level definitions of AWS workflows including security that rely on EC2 instances as well. At 70 slides, this is an excellent overview of Web application development on AWS.