Deploy web applications in Heroku, Configuring fresh ubuntu server, Jotr — Jot down your ideas — Table of Contents Deploy web applications in Heroku Configuring fresh ubuntu server instance Jotr — Jot down your ideas, thoughts and notes in the terminal. Deploy web applications in Heroku Heroku is a platform as a service based on a managed container system, with integrated data services and a powerful ecosystem, for deploying and running modern apps.