The Essentials of Modern Software Engineering: Free the Practices from the Method Prisons! by Ivar Jacobson Harold “Bud” Lawson Pan-Wei Ng Paul E. McMahon & Michael Goedicke

Author:Ivar Jacobson, Harold “Bud” Lawson, Pan-Wei Ng, Paul E. McMahon & Michael Goedicke
Language: eng
Format: epub
Publisher: Association for Computing Machinery and Morgan & Claypool Publishers
Published: 2019-03-14T16:00:00+00:00

14.3 Making Scrum Explicit Using Essence

Scrum can be represented as a practice that is a set of activities to help teams conduct iterative development in a highly collaborative manner. In Part IV of this book, we will show a different way to represent Scrum as a composition of multiple practices: that is, a product ownership practice, a backlog practice, an iterative development practice, and a retrospective practice. Thus, Scrum is not simple, and indeed, the Scrum Guide [Schwaber and Sutherland 2016] calls Scrum a process framework. For the purpose of this part of the book, we choose to use a simplified version of Scrum, which we represent as a single practice that we call Scrum Lite.1 While our Scrum Lite includes what we have assessed to be the important elements of Scrum, we do not include a discussion on the ideas of Scrum or all of the responsibilities of all of the Scrum roles, nor do we include all of the characteristics of a Scrum Team.

Different practice authors will have different ways to express their key concepts. So, Scrum will be expressed in one way (as depicted in Figure 14.1), user stories another way, use cases another way, and microservices yet another way. These authors haven’t used a common ground, because they haven’t had one. They use different terms for the same thing, and the same term may have different meaning in their practices. Some authors deal with this problem by re-describing what the original author developed, but they don’t use a standard like Essence; rather, they create their own terms. This doesn’t create a collaborative environment between the people who have contributed their ideas to the world. This is one of the serious problems Essence addresses—under Essence, every author uses the same standard language. It becomes significantly easier for students to learn many practices. Once they have learned one practice, they will while learning a new practice recognize that there is a lot in common, even if the new practice covers a different topic than the first practice. And the more practices they learn, the easier it becomes to learn something new.

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