# Interoperability ## Identification The ability of systems, formats, devices, and organizations to exchange data or functions. This notebook treats interoperability as a source of continuity and control. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF pages notebook-wide. ## Relationships and evidentiary boundary [[Digital preservation]] · [[Custom firmware]] · [[Dual-use infrastructure]]. The notebook occurrence records research context and page-level proximity. It does not by itself establish ownership, deployment, compromise, coordination, or present-day status.