What Life Cycle: Selecting and Tailoring Development Approaches

PMBOK v8 Definition

A project life cycle is the series of phases that a project passes through from its start to its completion. Development approaches (predictive, adaptive, or hybrid) determine how work progresses through the life cycle, and tailoring is the deliberate adaptation of the project approach, processes, and management practices to suit the specific project context, organization, and environment.

Why It Matters for the Exam

Life cycle and development approach selection is a foundational concept tested in 15-20% of PMI exam questions, particularly in situational questions where you must choose the appropriate approach based on project characteristics. Questions frequently appear in the Planning domain and require you to match project attributes (uncertainty, complexity, deliverable type) with the correct life cycle approach.

Key Points to Remember (for the exam)

• Three Development Approaches: Predictive (waterfall), Adaptive (agile/iterative), and Hybrid (combination of both)
• Selection Factors: Consider deliverables (type, complexity, uncertainty), project (size, risk, timeline), and organization (culture, capability, governance)
• Tailoring Process: Step 1 – Select initial development approach; Step 2 – Tailor for the organization
• Predictive Approach: Best when requirements are clear, stable, and well-understood; low uncertainty
• Adaptive Approach: Best when requirements are uncertain, evolving, or complex; high change frequency
• Hybrid Approach: Combines predictive elements (planning, documentation) with adaptive elements (iterations, feedback)
• Key Confusion: Life cycle (project phases) ≠ development approach (how work is done within phases)

Typical PMI Exam Example

A software project has high uncertainty in customer requirements but regulatory approval requires detailed documentation upfront. The project manager should select a hybrid approach to combine adaptive development iterations with predictive compliance documentation, ensuring both flexibility and regulatory adherence.

PMI Exam Traps

• Trap: Confusing "project life cycle" with "product life cycle"

  • Reality: Project life cycle = phases from start to close; product life cycle = entire product lifespan (including operations)

• Trap: Assuming adaptive means "no planning"

  • Reality: Adaptive approaches plan incrementally; they just defer detailed planning until more information is available

• Trap: Selecting predictive for all regulated projects

  • Reality: Regulatory requirements can be met within adaptive approaches; compliance documentation does not mandate full predictive life cycles

• Trap: Thinking tailoring is optional

  • Reality: Tailoring is a required process; every project must be adapted to its context, not executed by default

Important PMI Connections

Quick Review Questions

1. A construction project with fully defined blueprints and fixed budget should use which development approach?

2. What are the three factors to consider when selecting a development approach according to PMBOK v8?

3. During the tailoring process, what is the first step after selecting the initial development approach?

4. A project has moderate requirements clarity but needs some flexibility for emerging customer feedback. Which approach is most appropriate?

5. True or False: Adaptive approaches eliminate the need for project documentation and planning.

PMBOK v8 Reference

Section 4 – Project Life Cycles (pages 57-68) Section 3.3 – What to Tailor (pages 104-105) Section 3.4 – The Tailoring Process (page 105)