"We turned to Tumult Labs to design and implement our most challenging data release problem—how to provide half a billion statistics efficiently, accurately, and usefully from the hundreds of millions of records collected from every household in the country. These statistics describe the racial, ethnic and tribal populations of America in detail only available from the decennial census. Tumult’s excellent tools taught our expert demographers how to design these statistical summaries in a manner that ensured their fitness for use while provably guaranteeing the confidentiality of the underlying microdata. Tumult’s software, deployed on our internal Disclosure Avoidance System, will do its work in a few hours, but the tools will be reused within the Census Bureau for the next decade."