MGTS7527 Chap.1 Projects, the Iron Triangle and the Life Cycle
Projects, the Iron Triangle and the Life Cycle
Why the course starts with a definition
The first seminar defines a project the way the Project Management Institute did in 2025: a temporary effort, set in a unique context, that is undertaken to create value. That one sentence carries most of what follows in the semester.
Temporary means a start and a finish; unique context means the project's goals, stakeholders, constraints and risks are its own; and value means the point is the change the work produces, not the deliverable alone.
Constraints and vocabulary
The Iron Triangle of time, cost and scope frames the trade-offs every plan makes, with quality and value in the middle.
Week 1 also fixes a working vocabulary: project scope, schedule model, budget, quality, risk, constraint and stakeholder.
Students lose marks by blurring risk with constraint, or budget with estimate, so this chapter separates them carefully.
The life cycle and the people in it
Projects move from initiation to planning, then execution with monitoring and control alongside, and finally closure, and the phases may overlap.
The chapter walks each phase with its key activities, then turns to the team: the different roles people play and the principles of responsibility, obligation and custodianship that make collaboration respectful.
It closes with the forces making projects harder: rapid change, virtual teams, interconnected systems and ethical pressure.
How this chapter helps with the assessment
The life-cycle phases are the skeleton of the Team Project Plan, whose schedule must run from planning and procurement through refurbishment, testing, training, handover and closure.
Being able to say which phase an activity belongs to, and what question that phase answers, keeps a plan's sections in a sensible order.
What this chapter covers
- 01
The PMI definition of a project
- 02
Four characteristics of a project
- 03
Projects in practice and project management theory
- 04
The Iron Triangle and the triple constraint
- 05
Key project management terms
- 06
The five life-cycle phases
- 07
Responsibility, obligation and custodianship
- 08
Sources of project complexity
Worked example · free
Place a community garden project in its life-cycle phases
- 1(a) belongs to initiation: it answers why the project should proceed and whether it is feasible.
- 1(b) belongs to planning: breaking work into smaller components gives a realistic schedule and budget.
- 1(c) belongs to execution: the team produces the deliverable.
- 1(d) belongs to monitoring and control: tracking performance and adjusting the plan if needed.
- 1(e) belongs to closure: formal handover, acceptance and lessons learned for the next project.
Key terms
- Project
- A temporary effort with its own context, a start and a finish, carried out to create value.
- Iron Triangle
- The three competing constraints of time, cost and scope that a project must balance while delivering quality and value.
- Project Life Cycle
- The sequence of phases a project moves through between its start and its close.
- Project Phase
- A collection of logically related activities that ends in one or more deliverables or outcomes.
- Custodianship
- Care for the shared project outcome: protecting quality, supporting team learning and a respectful culture.
Projects, the Iron Triangle and the Life Cycle FAQ
How does the course define a project?
It uses the Project Management Institute's 2025 definition: a temporary effort, set in a unique context, that is undertaken to create value. Temporary means it has a beginning and an end; unique context means its goals, stakeholders, approach and conditions set it apart from routine work.
What is the difference between a project and an operation?
An operation repeats without a planned end, such as running payroll every fortnight. A project is temporary, has its own scope and stakeholders, and exists to create a change. The same work can become an operation once a project hands its output to the permanent organisation.
Why is quality placed inside the Iron Triangle?
Because success means balancing time, cost and scope while still delivering the required quality and value to stakeholders. A shortcut that saves time or money but damages quality has simply moved the cost somewhere less visible.
Which theories does Week 1 use to explain projects?
Contingency theory, which says no single way of managing suits every project; stakeholder theory, which says projects must weigh different interests; and governance and agency theory, which calls for clear authority and accountability among owners, sponsors and managers.
Assessment move
Write the PMI definition from memory, then test it on three pieces of work from your own life and decide whether each is a project, an operation or both. For each project, name which side of the Iron Triangle was under the most pressure and which phase it was in when that pressure appeared.
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