Disciplined agile delivery
Disciplined agile delivery (DAD) is the software development portion of the Disciplined Agile Toolkit. DAD enables teams to make simplified process decisions around incremental and iterative solution delivery. DAD builds on the many practices espoused by advocates of agile software development, including scrum, agile modeling, lean software development, and others. The primary reference for disciplined agile delivery is the book Choose Your WoW!, written by Scott Ambler and Mark Lines. WoW refers to "way of working" or "ways of working". In particular, DAD has been identified as a means of moving beyond scrum. According to Cutter Senior Consultant Bhuvan Unhelkar, "DAD provides a carefully constructed mechanism that not only streamlines IT work, but more importantly, enables scaling." Paul Gorans and Philippe Kruchten call for more discipline in implementation of agile approaches and indicate that DAD, as an example framework, is "a hybrid agile approach to enterprise IT solution delivery that provides a solid foundation from which to scale." Scott Ambler and Mark Lines initially led the development of DAD, and continue to lead its evolution. DAD was developed to provide a more cohesive approach to agile software development; one that tries to fill in the process gaps that are (purposely) ignored by scrum, and one that is capable of enterprise-level scale. According to Ambler, "Many agile methodologies—including scrum, XP, AM, Agile Data, kanban, and more—focus on a subset of the activities required to deliver a solution from project initiation to delivery. Before DAD was developed, you needed to cobble together your own agile methodology to get the job done." DAD was developed as a result of observing common patterns where agility was applied at scale successfully. In 2015 the Disciplined Agile (DA) framework, later to become the Disciplined Agile Toolkit, was developed. This was called Disciplined Agile 2.x. DAD formed the foundation for DA. A second layer, disciplined DevOps, was added as was a third layer called Disciplined Agile IT (DAIT).