In a collaborative, de-perimeterised environment, if the device needs be trusted then the management of devices becomes critical when collaborating with another device, system or service. The entire lifecycle of a device needs to be managed, from the point of device creation or onboarding3 process to register external devices as permissible to connect to other devices, systems or services, tthrough managing the device and ensuring the software / OS environment on the device stays current, to eventually repudiating the device and potentially removing any sensitive data or configuration information. Whether the device is a client or server, the same issues exist and while the lifecycle will be similar it will probably be managed under a more formalised process for servers.