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.
[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.
The Unified Process defines four project phases To these EUP adds two additional phases The Rational Unified Process defines nine project disciplines To these EUP adds one additional project discipline and seven enterprise disciplines The EUP provide following best practices:-