The PREMIS Data Dictionary for Preservation Metadata is the international standard for metadata to support the preservation of Digital Objects and ensure their long-term usability. Developed by an international team of experts, PREMIS is implemented in digital preservation projects around the world, and support for PREMIS is incorporated into a number of commercial and open-source digital preservation tools and systems. The PREMIS Editorial Committee coordinates revisions and implementation of the standard, which consists of the Data Dictionary, an XML schema, and supporting documentation. http://www.loc.gov/standards/premis/