DML meaning in Information Technology ?

A Definitive Media Library is a secure Information Technology repository in which an organisation's definitive, authorised versions of software media are stored and protected. Before an organisation releases any new or changed application software into its operational environment, any such software should be fully tested and quality assured. The Definitive Media Library provides the storage area for software objects ready for deployment and should only contain master copies of controlled software media configuration items (CIs) that have passed appropriate quality assurance checks, typically including both procured and bespoke application and gold build source code and executables. In the context of the ITIL best practice framework, the term Definitive Media Library supersedes the term definitive software library referred to prior to version ITIL v3.

In conjunction with the configuration management database (CMDB), it effectively provides the DNA of the data center i.e. all application and build software media connected to the CMDB record of installation and configuration.

The Definitive Media Library (DML) is a primary component of an organisation's release and provisioning framework and service continuity plan.