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Data serialization formats for interoperability include JSON-LD for structured identity data, CBOR for compact binary encoding, and Protocol Buffers for cross-platform efficiency. XML with Schematron validates complex hierarchies, while ASN.1 supports cryptographic signatures. Parquet and Avro optimize big data storage, while CSV remains widely used for legacy systems. Universal formats like ISO/IEC 24761 ensure global compliance in identity ecosystems.
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