1 Scope
This document specifies digital twin compositions in manufacturing by defining principles, describing methodologies and providing use-case
examples of digital twin communication, aggregation and interoperation.
This document identifies three kinds of digital twin composition (integrated, unified, and federated) and specifies requirements and step-by-step
implementation guidelines for each kind. It provides structured approaches for composing
multiple digital twins to support interoperability among digital twins developed by
different parties, such as vendors, solution providers, and in-house developers. The
document also includes illustrative use cases to demonstrate the practical application
of the specified composition approaches.