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A Common Operating Environment (COE) is

[t]he collection of standards, specifications, and guidelines, architecture definitions, software infrastructures, reusable components, application programming interfaces (APIs), runtime environment definitions, reference implementations, and methodology that establishes an environment on which a system can be built. The COE is the vehicle that assures interoperability through a reference implementation that provides identical implementation of common functions. It is important to realize that the COE is both a standard and an actual product.[1]


  1. Capstone Requirements Document: Global Information Grid (GIG) 69 (JROCM 134-01) (Aug. 30, 2001) (unclassified) (full-text).