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The goal of the 5G Exchange project is to enable cross-domain orchestration of services over multiple administrations. The system we build allows the end-to-end integration of heterogeneous resource and service elements of a multi-vendor technology environment from multiple operators by sharing their network and compute infrastructures via NFV orchestration. We will run an industry control 5G use-case, where one of the VNFs is offered by a 3rd party solution provider as a VNFaaS. We will show i) full automation for end-to-end network service orchestration over multi-provider NFV and VNFaaS offerings with latency and high availability constraints; ii) actor-role models and business interactions and iii) how - with a feedback loop to lifecycle management - the system can adapt to changes.