A language or notation whose primary purpose is representing structured data, name-value pairs, arrays and nested objects, for storage or transmission between programs, rather than marking up human-authored document text. Added per TaxonomyDecisionId 31 (2026-09-01, owner decision), which folds data-serialization formats into this atlas's existing language EntityType rather than splitting them into a new type, distinguished here by SubLabel the same way every other language member already is. Belongs here: JSON and YAML. Does not belong here: a language whose primary purpose is marking up document text for display or publishing, filed under Markup Language, or a language designed to query a database, filed under Query Language.
Facts
Comparison
Era of Emergence Data Serialization Format
Sources
1. Wikipedia: JSON
Wikimedia FoundationJSON, History sectionQuote, JSON, History section
Douglas Crockford originally specified the JSON format in the early 2000s, and sent the first JSON message in April 2001 with Chip Morningstar.
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