This document is intended for use by data owners within government to learn how Demand-Driven Open Data (DDOD) could benefit their organizations. DDOD is an initiative by the U.S. Department of Health and Human Services (HHS) started in November 2014 as part of its IDEA Lab program. The goal is to leverage the vast data assets throughout HHS’s agencies (CMS, NIH, CDC, FDA, AHRQ and others) to create additional economic and public health value. DDOD provides a systematic, ongoing and transparent mechanism for anybody to tell HHS and its agencies what data would be valuable to them. With this initiative HHS can move from measuring Open Data in terms of number of datasets released to value in terms of use cases enabled. DDOD website: http://ddod.us