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Sashimi Model

The Sashimi Model has highly overlapping steps; it can be thought of as a real-world successor to the Waterfall Model (and is sometimes called the Sashimi Waterfall Model). It is named after the Japanese delicacy Sashimi, which has overlapping layers of fish (and also a hint for the exam). The model is based on the hardware design model used by Fuji-Xerox: “Business scholars and practitioners were asking such questions as ‘What are the key factors to the Japanese manufacturers’ remarkable successes?’ and ‘What are the sources of their competitive advantage?’ The sashimi system seems to give answers to these questions.” [9]

Peter DeGrace described Sashimi in relation to software development in his book Wicked Problems, Righteous Solutions: A Catalogue of Modern Software. Sashimi’s steps are similar to the Waterfall Model’s; the difference is the explicit overlapping, shown in Fig. 9.4.

The Sashimi Model [10].