Simon Willison’s Weblog

New Features for EC2: Elastic Load Balancing, Auto Scaling, and Amazon CloudWatch. EC2 now fulfils the promise of “magic scaling in the cloud” out of the box—CloudWatch monitors performance of your EC2 instances without needing to install any monitoring software, Auto Scaling allows you to configure “scaling triggers” which start up new instances based on information from CloudWatch, and Elastic Load Balancing balances requests across all available instances.