The Domain is a part of the Kreo connect infrastructure created and maintained by each customer.
In the Domain the customer will insert the definition of the devices that have to be remotely accessible.
Typically the domain will have a multi network structure.
The customer can also define one or more subdomain and associate specific users to each subdomain.
The user associated to a specific subdomain will have access to the application defined in that specific subdomain only.
For example a machine builder company can create a specific subdomain per each end_customers; the support engineers of the machine builder company will have access to all the subdomains while the support engineer of an end_customer will have access to his subdomain only.
The Lumia device is connected to the WAN infrastructure (having internet connection) and with a different port to the local LAN of the machine.
The Lumia device is the component that manage the connection between the OT (machine) and the IT (infrastructure)
