Yep, these are handled via the provisioning apis. When the addon is installed, the service gets a simple provision api request with the customer details. When t

Yep, these are handled via the provisioning apis. When the addon is installed, the service gets a simple provision api request with the customer details. When the addon is uninstalled, there's a deprovision api request. Heroku Addons are super well documented and easy to develop and deploy. One of the best parts of the platform.