Explanation
The term must be interpreted in the context of system purpose, lifecycle stage, architecture, timing requirements, and operational authority. Document the local meaning rather than assuming every stakeholder uses it identically.
Why it matters
Clear definitions prevent architecture and assurance claims from quietly changing as information moves among engineering, security, operations, suppliers, and leadership.
Security implications
Treat relevant identity, integrity, provenance, authorization, availability, synchronization, safety, and recovery properties as explicit requirements that can be tested and evidenced.
PRIMARY SOURCES
References
- NIST IR 8356: Security and Trust Considerations for Digital Twin TechnologyNIST · 2025 · Government research publication
Primary NIST treatment of digital-twin characteristics, cybersecurity, and trust considerations.