A connection in general describes that two parts are linked with each other. In our context, we use the term connection related to Eclipse Ditto's connectivity microservice.
You can configure connections with the Bosch IoT Hub as well as generic endpoints using AMQP 1.0, AMQP 0.9.1 (e.g. RabbitMQ), MQTT, HTTP (outgoing only), or Apache Kafka.
To configure a managed connection of your Things service instance with external systems you can use the Connections UI.
There you can see the status of connections, adjust them, or even create new ones.
In case you nee to integrate to services on a public cloud like AWS or Azure, see our Public cloud integration examples.