Abstract: A service implemented at a first isolated virtual network of a provider network is added to a database of privately-accessible services. Configuration changes that enable network packets to flow between the first isolated virtual network and a second isolated virtual network without utilizing a network address accessible from the public Internet are implemented. Service requests originating at the second isolated virtual network are transmitted to the first isolated virtual network via private pathways of the provider network. Metrics corresponding to service requests directed from the second isolated network to the service are collected and provided to the respective owners of one or both isolated virtual networks.

Abstract: Drop scaffolding is formed by assemblies of drop tubes 12 and scaffold tubes 15 extending transversely between the drop tubes. Each drop tube has a top coupling secured to an upper part thereof and a bottom coupling secured to a lower part thereof, the two couplings being similar and having cradles with openings directed respectively generally downwardly and generally upwardly. Each coupling comprises an elongate body having a hollow section with a longitudinal axis extending the length of the body, in which section a drop tube is secured. A hook-like cradle 14b, 14c, 14d projects from the body away from the hollow section with an opening x between retaining walls 14c, 14d, each making an acute angle with the longitudinal axis of the section in the quadrant that includes the first end of the body.