DDEX has standardised a series of Message Suite Standards that define the syntax and semantics of business metadata exchanged by members of the digital media delivery chain. DDEX has also standardised an automated message exchange protocol that enables the reliable communication of DDEX messages and associated documents such as resource files, using SFTP.
This standard defines, together with the Release Notification Message Suite Standard and its Profiles, a uniform mechanism for Release Creators to provide Release Distributors with Releases (metadata and Resource files) as well as Deals for making such Releases available by means of web services.
Any organisation wishing to implement this (or any other DDEX Standard) is required to apply for an Implementation Licence. The terms of the licence and an application form can be found at http://dpid.ddex.net.