A network functions virtualization, NFV, network system, comprising: a network service orchestration, NSO, node, a first resource management orchestration, RO, node, a first network node, a virtualized network function manager, VNFM, node, a virtualized infrastructure manager, VIM, node, a catalog, a network functions virtualization, NFV, instance, and a network functions virtualization infrastructure, NFVI, resource, wherein the catalog comprises a network service, NS, catalog and a virtualized network function, VNF, catalog, and the first network node is an operation support system, OSS, or a third-party software system; the NSO node is connected to the first network node via an operation support-network service orchestration interface, the NSO node is connected to the first RO node via a network service orchestration-resource management orchestration interface, and the NSO node is connected to the catalog; and the first RO node is connected to the first network node via an operation support-resource management orchestration interface, the first RO node is connected to the VNFM node, the first RO node is connected to the VIM node, characterized by the first RO node being separately connected to the catalog, the network functions virtualization instance, and the network functions virtualization infrastructure resource; further characterized by the NFV network system comprising: N RO nodes and M VIM nodes, wherein N is an integer greater than or equal to 2, and M is an integer greater than or equal to 1; wherein the NSO node is connected to the first RO node, the first RO node is separately connected to the N-1 remaining RO nodes, and each one of the N-1 remaining RO nodes is connected to at least one of the VIM nodes. a network service orchestration, NSO, node, a first resource management orchestration, RO, node, a first network node, a virtualized network function manager, VNFM, node, a virtualized infrastructure manager, VIM, node, a catalog, a network functions virtualization, NFV, instance, and a network functions virtualization infrastructure, NFVI, resource, wherein the catalog comprises a network service, NS, catalog and a virtualized network function, VNF, catalog, and the first network node is an operation support system, OSS, or a third-party software system; the NSO node is connected to the first network node via an operation support-network service orchestration interface, the NSO node is connected to the first RO node via a network service orchestration-resource management orchestration interface, and the NSO node is connected to the catalog; and the first RO node is connected to the first network node via an operation support-resource management orchestration interface, the first RO node is connected to the VNFM node, the first RO node is connected to the VIM node, characterized by the first RO node being separately connected to the catalog, the network functions virtualization instance, and the network functions virtualization infrastructure resource; further characterized by the NFV network system comprising: N RO nodes and M VIM nodes, wherein N is an integer greater than or equal to 2, and M is an integer greater than or equal to 1; wherein the NSO node is connected to the first RO node, the first RO node is separately connected to the N-1 remaining RO nodes, and each one of the N-1 remaining RO nodes is connected to at least one of the VIM nodes.