![]() Won't have requirements are either dropped or reconsidered for inclusion in a later timebox. As a result, Won't have requirements are not planned into the schedule for the next delivery timebox. Won't have (this time) Requirements labelled as Won't have, have been agreed by stakeholders as the least-critical, lowest-payback items, or not appropriate at that time. These will typically be included if time and resources permit. Could have Requirements labelled as Could have are desirable but not necessary and could improve the user experience or customer satisfaction for a little development cost. While Should have requirements can be as important as Must have, they are often not as time-critical or there may be another way to satisfy the requirement so that it can be held back until a future delivery timebox. Should have Requirements labelled as Should have are important but not necessary for delivery in the current delivery timebox. MUST can also be considered an acronym for the Minimum Usable Subset. If even one Must have requirement is not included, the project delivery should be considered a failure (note: requirements can be downgraded from Must have, by agreement with all relevant stakeholders for example, when new requirements are deemed more important). The categories are typically understood as: Must have Requirements labelled as Must have are critical to the current delivery timebox in order for it to be a success. The plain English meaning of the prioritization categories has value in getting customers to better understand the impact of setting a priority, compared to alternatives like High, Medium and Low. Developers will initially try to deliver all the Must have, Should have and Could have requirements but the Should and Could requirements will be the first to be removed if the delivery timescale looks threatened. MoSCoW is often used with timeboxing, where a deadline is fixed so that the focus must be on the most important requirements, and is commonly used in agile software development approaches such as Scrum, rapid application development (RAD), and DSDM.Īll requirements are important, however to deliver the greatest and most immediate business benefits early the requirements must be prioritized. It was first used extensively with the dynamic systems development method (DSDM) from 2002. This prioritization method was developed by Dai Clegg in 1994 for use in rapid application development (RAD). While the Os are usually in lower-case to indicate that they do not stand for anything, the all-capitals MOSCOW is also used. The interstitial Os are added to make the word pronounceable. The term MOSCOW itself is an acronym derived from the first letter of each of four prioritization categories: The MoSCoW method is a prioritization technique used in management, business analysis, project management, and software development to reach a common understanding with stakeholders on the importance they place on the delivery of each requirement it is also known as MoSCoW prioritization or MoSCoW analysis. For other uses, see The Moscow rules and Moscow (disambiguation). ![]()
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