Framework for network technology agnostic multi-cloud elastic extension and isolation

an MCEE logical structure relating tenant resources of a tenant site, first non-tenant cloud resources at a first non-tenant cloud site, and second non-tenant cloud resources at a second non-tenant site, is establishd. The MCEE logical structure nodes are mapped to a segmented end-to-end virtual network structure (E2E-VNS) such that the resources at each node of the MCEE logical structure are in a separate virtual network of the E2E-VNS. An extension and isolation (EXI) domain is established in the MCEE logical structure associating at least one node of the tenant resources with at least one node of the first non-tenant cloud and at least one node of the second non-tenant cloud. The E2E-VNS virtual networks of the nodes of the EXI domain for isolation of the resources of the nodes of the EXI domain from the other resources of the MCEE logical structure in an EXI virtual network, are connectd for network communications, 建立与租户站点的租户资源、第非租户云站点处的第非租户云资源、以及第二非租户站点处的第二非租户云资源有关的MCEE逻辑结构。将MCEE逻辑结构节点映射到分段端到端虚拟网络结构(E2E-