Zend Server Enterprise Edition for RHEL on EC2 is your choice for running PHP in the cloud when compliance, security, and 24x7 support are not optional. It's an application server with a supported PHP runtime that can scale seamlessly across cloud resources, from the company that helped write PHP. Zend Server gives PHP developers and DevOps engineers the tools they can use like Z-Ray debugging solution, deployment automation, performance monitoring, request analysis, and configuration management so applications run faster, scale better, and stay up longer. It is particularly useful for running mobile application back ends that require scalability based on demand. You can even create a scalable Zend Server cluster using our CloudFormation template generator: http://www.zend.com/en/products/server/cloudformation