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The ability for disparate systems to communicate with one another and for digital assets to be portable between virtual worlds. The term is generally applicable to all virtual and physical systems in the Metaverse eco-system including perception devices like VR headsets, 2D screens, IoT sensors, phygital linking and so forth.

Interoperability is best handled by standards development organizations (SDOs.) Examples are W3C, IETF, Khronos Group, IEEE, SCTE, ISO, CSA, IEC, ANSI, DVB, 3GPP.