Heroku control plane Built by Heroku, the control plane is the fabric of automated services that provides high availability, scalability and management.
Private runtime A Space is an isolated, dedicated runtime environment with its own private network.
Network boundary and router Apps in Spaces are on an isolated, private network. Access to apps in a Space is configurable at the network level.
Private data services Heroku Postgres EX and Heroku Redis EX are dedicated versions of Heroku data services accessible only over a Space's private network.
Apps run in dynosApps run on private, dedicated dynos – smart containers with curated, automatically patched language stacks.