Enterprise Unified Process

The Enterprise Unified Process (EUP) is an extended variant of the Unified Process and was developed by Scott W. Ambler and Larry Constantine in 2000, eventually reworked in 2005 by Ambler, John Nalbone and Michael Vizdos.^[1] EUP was originally introduced to overcome some shortages of RUP, namely the lack of production and eventual retirement of a software system. So two phases and several new disciplines were added. EUP sees software development not as a standalone activity, but embedded in the lifecycle of the system (to be built or enhanced or replaced), the IT lifecycle of the enterprise and the organization/business lifecycle of the enterprise itself.^[2] It deals with software development as seen from the customer's point of view.

In 2013 work began to evolve EUP to be based on Disciplined Agile Delivery instead of the Unified Process.

Phases

The Unified Process defines four project phases

Inception
Elaboration
Construction
Transition

To these EUP adds two additional phases

Production
Retirement

Disciplines

The Rational Unified Process defines nine project disciplines

Business Modeling
Requirements
Analysis and Design
Implementation
Test
Deployment
Configuration and Change Management
Project Management
Environment

To these EUP adds one additional project discipline

Operations and Support

and seven enterprise disciplines

Enterprise Business Modeling
Portfolio Management
Enterprise Architecture
Strategic Reuse
People Management
Enterprise Administration
Software Process Improvement

Best Practices of EUP

The EUP provide following best practices:-

Develop iteratively
Manage requirements
Proven architecture
Modeling
Continuously verify quality.
Manage change
Collaborative development
Look beyond development.
Deliver working software on a regular basis
Manage risk

References

^ See Ramsin(2008) and Ambler et al. (2005) for details on history of EUP
^ Ambler et al (2005) p.7

Bibliography

Ambler, Scott W.; Constantine, Larry L. (2000), The unified process inception phase: best practices in implementing the UP, Focal Press, ISBN 978-1-929629-10-7
Ambler, Scott W.; Constantine, Larry L. (2000), The unified process elaboration phase: best practices in implementing the UP, Focal Press, ISBN 978-1-929629-05-3
Ambler, Scott W.; Constantine, Larry L. (2000), The unified process construction phase: best practices for completing the unified process, Focal Press, ISBN 978-1-929629-01-5
Ambler, Scott W.; Constantine, Larry L. (2002), The Unified process transition and production phase, Focal Press, ISBN 978-1-57820-092-4
Ambler, Scott W; Nalbone, John; Vizdos, Michael J (2005), The Enterprise Unified Process : extending the Rational Unified Process, Prentice Hall PTR, Bibcode:2005eup..book.....A, ISBN 978-0-13-191451-3, OCLC 57380579
Ramsin, Raman (2008). "Process-centered review of object oriented software development methodologies". ACM Computing Surveys. Association of Computing Machinery ACM. 40 (1): 1–89. doi:10.1145/1322432.1322435. S2CID 13604145.

External links

Scott W. Ambler's website on the Enterprise Unified Process

[1] See Ramsin(2008) and Ambler et al. (2005) for details on history of EUP

[2] Ambler et al (2005) p.7

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