> A leaf item in the *Solution Runner* is called as an *Application* as it is an executable application.
> A leaf item in the *Solution Runner* is called as an *Application* as it is an executable application, excluding items under `Containers`.
As shown in the figure above, the executable applications are grouped into folders like `apps`, `gateways`, and `services`. You can start/stop them all, a group (folder) of them, or one by one. The `Containers` branch contains the needed docker containers for the applications.