mode RESTful API: designed for applications that retrieve Data and Events via HTTPS using a RESTful API architecture. This mode is stateless, meaning each request is independent and the server does not maintain a session.

Broker / "Application mode" : Customer Applications (backend) retrieve Data and Events from FIFO queues, pushed according to Notification rules. Using MQTT protocol, this mode supports stateful sessions, allowing MQTT clients to maintain persistent subscriptions without losing messages.