Amazon Web Services has announced Elastic Beanstalk in beta.
AWS Elastic Beanstalk is an even easier way for you to quickly deploy and manage applications in the AWS cloud. You simply upload your application, and Elastic Beanstalk automatically handles the deployment details of capacity provisioning, load balancing, auto-scaling, and application health monitoring. At the same time, with Elastic Beanstalk, you retain full control over the AWS resources powering your application and can access the underlying resources at any time. Elastic Beanstalk leverages AWS services such as Amazon EC2, Amazon S3, Amazon Simple Notification Service, Elastic Load Balancing, and Auto-Scaling to deliver the same highly reliable, scalable, and cost-effective infrastructure that hundreds of thousands of businesses depend on today. AWS Elastic Beanstalk is easy to begin and impossible to outgrow.
More info: http://aws.amazon.com/elasticbeanstalk/