I recently released a new blog post about deploying a CUBA application to Heroku. With the latest changes in 7.2 it even got easier to perform the deployment. In combination with Heroku it really becomes an easy, fast and reliable way of hosting your CUBA application.
In the blog post you will learn the difference between IaaS and PaaS like Heroku. Then I go ahead and explain the “PaaS experience” on the concrete example of deploying the Petclinic app to Heroku.
Alternatively, if you are more into video tutorials I captured the steps in this youtube vid as well:
Youtube - How to deploy a CUBA Platform application to Heroku in 10 steps