Project Management Quadruple Constraint Jeffrey P. Landry, Ph.D.
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Transcript of Project Management Quadruple Constraint Jeffrey P. Landry, Ph.D.
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Project Management Quadruple Constraint
Jeffrey P. Landry, Ph.D.
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ISC-565 2
Project
Defined: “A temporary endeavor undertaken to create a unique product or service.”*
IS project: A temporary endeavor to develop or enhance an information system
* Project Management Institute, Inc. A Guide to Project Management Body of Knowledge
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ISC-565 3
Characteristics of Projects
Unique purpose (eg. to build or enhance an IS)
Temporary Requires resources Has a primary sponsor (customer) Involves uncertainty (and unpredictability?)
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ISC-565 4
Four Dimensions of Projects
Scope Time Cost Quality
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ISC-565 5
Quadruple Constraint
Scope
Time Cost
Quality
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ISC-565 6
Quadruple Constraint
A change in one dimension affects one or more of the others• Increasing scope increases both time and
cost
• Cutting quality reduced cost and time
• Increasing cost decreases time
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ISC-565 7
Quadruple Constraint
Deals with core areas of project performance
Each dimension is measurable Project success and failure in terms of
these dimensions
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ISC-565 8
Brooks’ Law
Adding workers to a late project makes it later
Recognizes that adding new people to a project creates• The need for training and learning
• Additional communication paths
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ISC-565 9
Abdel-Hamid
Found that Brooks’ Law had a caveat• Increasing cost (adding people) early enough
can reduce time
• Adding more people to quality assurance activities has a greater impact on time while not sacrificing quality goals