AWS' IoTCore turns a Linksper container (a device or a Node) into a "thing". They are automatically provisioned in AWS.
There are no concepts of points in IoTCore. The initialization phase of a device and a point (their registration) sends the list of tags (with respect to data models) to the /service topic and allows to capture the existence of points.
MQTT topics are organised according to the deviceId (the unique identifier of a container)
Changes in the value of a point are sent to the topic /events.
State changes of a point are sent to the /state topic
Requests for modifications (writing a point, acknowledging an alarm...) must be sent by the third party service on the /command topic
Note that it is also possible to use the AWS Shadow concept to apply commands