Horizontal scalability has always been at the core of PHP application design, and in the cloud, that approach shines the brightest. But to fully leverage the power and convenience of PaaS offerings such as Heroku, it's worth following certain best practices and methodologies when developing applications. This presentation covers all the steps from code and dependency management over configuration to maintaining dev/prod environment parity, and will demonstrate, live on stage, just how easy it can be to deploy and scale a Symfony application on Heroku.