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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.
The term MoSCoW itself is an acronym derived from the first letter of each of four prioritization categories (Must have, Should have, Could have, and Won't have), with the interstitial Os added to make the word pronounceable. While the Os are usually in lower-case to indicate that they do not stand for anything, the all-capitals MOSCOW is also used.
Background[edit]
This prioritization method was developed by Dai Clegg[1] and first used extensively with the agile project delivery framework Dynamic Systems Development Method (DSDM).[2]
MoSCoW is often used with timeboxing, where a deadline is fixed so that the focus must be on the most important requirements, and as such is a technique commonly used in agile software development approaches such as Scrum, rapid application development (RAD), and DSDM.
Prioritization of requirements[edit]
All requirements are important, but they are prioritized to deliver the greatest and most immediate business benefits early. Developers will initially try to deliver all the Must have, Should have and Could have requirements but the Should and CouldSam cooke songs free mp3 download. requirements will be the first to be removed if the delivery timescale looks threatened.
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.
The categories are typically understood as:[3]
Must Have Things For C Devs 2017
- Must have
- Requirements labelled as Must have are critical to the current delivery timebox in order for it to be a success. 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). MUST can also be considered an acronym for the Minimum Usable Subset.
- Should have
- Requirements labelled as Should have are important but not necessary for delivery in the current delivery timebox. 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.
- 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. These will typically be included if time and resources permit.
- 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. As a result, Won't have requirements are not planned into the schedule for the next delivery timebox. Won't have requirements are either dropped or reconsidered for inclusion in a later timebox. (Note: occasionally the term Would like to have is used; however, that usage is incorrect, as this last priority is clearly stating something is outside the scope of delivery).
Variants[edit]
Sometimes W is used to mean Wish (or Would), i.e. still possible but unlikely to be included (and less likely than Could). This is then distinguished from X for Excluded for items which are explicitly not included.
Use in new product development[edit]
In new product development, particularly those following agile software development approaches, there is always more to do than there is time or funding to permit (hence the need for prioritization).
For example, should a team have too many potential epics (i.e., high-level stories) for the next release of their product, they could use the MoSCoW method to select which epics are Must have, which Should have, and so on; the minimum viable product (or MVP) would be all those epics marked as Must have.[4] Oftentimes, a team will find that, even after identifying their MVP, they have too much work for their expected capacity. In such cases, the team could then use the MoSCoW method to select which features (or stories, if that is the subset of epics in their organisation) are Must have, Should have, and so on; the minimum marketable features (or MMF) would be all those marked as Must have.[5] If there is sufficient capacity after selecting the MVP or MMF, the team could then plan to include Should have and even Could have items too.[6]
Criticism[edit]
Criticism of the MoSCoW method includes:
- Doesn't help decide between multiple requirements with same rank.
- Lack of rationale around how to rank competing requirements: why something is must rather than should.[7][8]
- Ambiguity over timing, especially on the Won't have category: whether it is not in this release or not ever.[7]
- Potential for political focus on building new features over technical improvements (such as refactoring).[8]
References[edit]
- ^Clegg, Dai; Barker, Richard (1994). Case Method Fast-Track: A RAD Approach. Addison-Wesley. ISBN978-0-201-62432-8.
- ^Bittner, Kurt; Spence, Ian (2002-08-30). Use Case Modeling. Addison-Wesley Professional. ISBN978-0-201-70913-1.
- ^'MoSCoW Analysis (6.1.5.2)'. A Guide to the Business Analysis Body of Knowledge (2 ed.). International Institute of Business Analysis. 2009. ISBN978-0-9811292-1-1.
- ^Wernham, Brian (2012). Agile Project Management for Government. Maitland and Strong. ISBN0957223404.
- ^Davis, Barbee (2012). Agile Practices for Waterfall Projects: Shifting Processes for Competitive Advantage. Project Management Professional Series. J. Ross Publishing. ISBN1604270837.
- ^Cline, Alan (2015). Agile Development in the Real World. Apress. ISBN1484216792.
- ^ abWiegers, Karl; Beatty, Joy (2013). Software Requirements. Washington, USA: Microsoft Press. pp. 320–321. ISBN978-0-7356-7966-5.
- ^ abMcIntyre, John (October 20, 2016). 'Moscow or Kano - how do you prioritize?'. HotPMO!. Retrieved October 23, 2016.
Must Have Things For C Devs Download
External links[edit]
- RFC 2119 (Requirement Levels) This RFC defines requirement levels to be used in formal documentation. It is commonly used in contracts and other legal documentation. Noted here as the wording is similar but not necessarily the meaning.
- Buffered Moscow Rules This essay proposes the use of a modified set of Moscow rules that accomplish the objectives of prioritizing deliverables and providing a degree of assurance as a function of the uncertainty of the underlying estimates.
- MoSCoW Prioritisation Steps and tips for prioritisation following the DSDM MoSCoW rules.
- The ToToTo Method A method inspired by the MoSCoW Method of prioritization.