The Joint Data Archiving Policy (JDAP) describes a requirement that supporting data be publicly available. This policy was adopted in a joint and coordinated fashion by many leading journals in the field of evolution in 2011, and JDAP has since been adopted by other journals across various disciplines. Additional journals are welcome to endorse and implement JDAP, or use it as a model. Journals that adopt JDAP often recommend Dryad as an appropriate data repository, however the JDAP initiative is distinct from Dryad.