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Discover, Document, and Interoperate

The DDI Alliance is an international membership organization that creates and maintains technical standards for describing research data in the social, demographic, economic, and health sciences. 

We provide a suite of products that address the evolving needs of data producers and users.  Documenting data with our open standards improves consistency, integration, and quality, producing FAIR data, realizing its full potential for people, software, and machines.

•  Generate interactive codebooks
•  Implement data catalogs
•  Build question banks
•  Create concordance mappings
•  Harmonize and compare data
•  Manage longitudinal data sets