Engine Yard vs Scalr

Engine Yard is a platform as a service (PaaS) that provides automated cloud hosting, management, and scaling for Ruby on Rails and PHP applications. It handles provisioning, configuring, monitoring, patching, and managing servers and applications in the cloud.

Scalr is a cloud management platform that provides automation and governance for managing infrastructure in public, private, and hybrid clouds. It enables organizations to easily deploy and scale cloud infrastructure and applications.