Amazon Web Services Developer Community : Building GrepTheWeb in the Cloud, Part 1: Cloud Architectures

Amazon Web Services Developer Community : Building GrepTheWeb in the Cloud, Part 1: Cloud Architectures: "Applications built on Cloud Architectures run in-the-cloud where the physical location of the infrastructure is determined by the provider. They take advantage of simple APIs of Internet-accessible services that scale on-demand, that are industrial-strength, where the complex reliability and scalability logic of the underlying services remains implemented and hidden inside-the-cloud. The usage of resources in Cloud Architectures is as needed, sometimes ephemeral or seasonal, thereby providing the highest utilization and optimum bang for the buck."