Vimeo is one of the leading tools for online video today. Thousands of new videos uploaded every week and stored in AWS S3 Storage. This is a great case study of an implementation of an advanced cost efficient operations.
This presentation was presented by Vimeo cloud architects - Narendra Venkataraman and Peter McArthur at the AWS Summit in NYC 2011. This great knowledge resource for advanced AWS cloud users describes an automation process that uses EC2 on-demand, spot, and reserved instances to perform online tasks i.e. videos uploads and transcoding.