The Windows Server Update Services: Client-Server Protocol imposes the following requirement on server implementations.
This document specifies how the binaries and metadata are distributed using the Client-Server Communications Protocol. It does not specify the format of the binaries or metadata themselves, but it assumes that the metadata is well-formed XML and is compatible with the XPATH queries specified in section 22.214.171.124 for populating the server data model. In all other respects, the binaries and metadata are treated as opaque by the server.
The Windows Server Update Services: Client-Server Protocol imposes the following requirement on client implementations.
Clients MUST be configured to obtain updates from the server. This configuration can be performed manually or, in managed environments, by an appropriate form of centralized machine configuration.