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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.

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Subscribe to the quarterly DDI newsletter for news, initiatives, community updates, and events. 
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Learn How to Use DDI

Researchers

Data Managers

Statistical Agencies

Developers

Enhancing Data Reuse, Supporting Standards Compliance,  Improving Interoperability

SURVEY RESEARCH
Build Question Banks
CROSS STUDY COMPARISON
Harmonize and Compare Data
DATA DISCOVERY
Implement Data Catalogs
VARIABLE RELATIONSHIPS
Create Concordance Mapping
COMPLEX RESEARCH DESIGN
Manage Longitudinal Datasets
News & Events