Abstract: A system and method of managing secure integration of a cloud-based computing resource with a private domain are disclosed. One system includes a hybrid cloud arrangement including a plurality of virtual machines, the plurality of virtual machines including at least a first virtual machine within the private domain and a second virtual machine within a public cloud. The system also includes a virtual data relay within the private domain and associated with the second virtual machine. The virtual data relay includes a private domain interface used to establish a secure communication link according to a first security protocol with each virtual machine within the private domain that is a member of a community of interest, the virtual data relay assigned a community of interest key used by the private domain interface and defining the community of interest of which the second virtual machine is a member.