A method for establishing communications in an Internet of Things, IoT, device deployment, comprising operations performed by processing circuitry of a first loT device , wherein the first remote service and the first IoT device operate in a first service domain, the operations including: obtaining security information to mutually authenticate permissions and establish link security, from a second IoT device , to communicate with a second remote service associated with the second IoT device , the second remote service and the second loT device operating in a second service domain, wherein the operations to obtain the information from the second IoT device to communicate with the second remote service , are performed in response to discovery of the second loT device on the local area network, wherein the information obtained from the second IoT device includes information to mutually authenticate permissions and establish communication link security; providing the information to a first remote service , wherein in response to the information the first remote service initiates a validation procedure with the second remote service ; obtaining service validation information from the second IoT device , wherein the service validation information is provided from the second remote service to the second IoT device in response to the validation procedure; and providing the service validation information to the first remote service , to enable a validated connection between the first remote service and the second remote service to communicate data or commands between the first IoT device and second IoT device via the first remote service and the second remote service , wherein the first remote service further provides authentication information that accompanies data or commands to the second remote service , wherein the validated connection between the first remote service and the second remote service is established based on use of the authentication information. obtaining security information to mutually authenticate permissions and establish link security, from a second IoT device , to communicate with a second remote service associated with the second IoT device , the second remote service and the second loT device operating in a second service domain, wherein the operations to obtain the information from the second IoT device to communicate with the second remote service , are performed in response to discovery of the second loT device on the local area network, wherein the information obtained from the second IoT device includes information to mutually authenticate permissions and establish communication link security; providing the information to a first remote service , wherein in response to the information the first remote service initiates a validation procedure with the second remote service ; obtaining service validation information from the second IoT device , wherein the service validation information is provided from the second remote service to the second IoT device in response to the validation procedure; and providing the service validation information to the first remote service , to enable a validated connection between the first remote service and the second remote service to communicate data or commands between the first IoT device and second IoT device via the first remote service and the second remote service , wherein the first remote service further provides authentication information that accompanies data or commands to the second remote service , wherein the validated connection between the first remote service and the second remote service is established based on use of the authentication information. <EOS>