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Non-proprietary, maintained by non-profit DSDM Consortium formed by user companies

Principle idea:  Fix time & resources, adapt on functionality

Five phases (first two done only first time, others iteratively cycled):

-Feasibility- determine suitability of DSDM for project

-Business Study- outputs:

• Business Area Definition- description of business needs in work
• System Architecture Definition- a first draft that can change later
• Outline Prototyping Plan- protyping strategy for upcoming cycles + plan for managing it

-Functional model iteration- Similar to iteration planning in XP; involves prototype generation

-Design and build Iteration- Main building work

-Implementation- make product work in production environment

Various practices enumerated, generally consistent with "Agile" approaches