Project Phase Scenarios: Characteristics and Life Cycle Impacts

PMBOK v8 Definition

A project phase is a collection of logically related project activities that culminates in the completion of one or more deliverables and/or outcomes. Phases may be sequential, transitional, or overlapping, and each phase may include one or more stages of the project life cycle. A generic project phase is impacted by characteristics that vary by project life cycle, including cost and staffing levels, risk and uncertainty, and the ability to adjust attributes such as name, duration, entrance criteria, and exit criteria.

Why It Matters for the Exam

Phase scenarios appear frequently in situational questions where you must determine the appropriate life cycle approach or predict phase behavior. The PMI exam tests your ability to recognize how cost, staffing, risk, and uncertainty patterns change across different project phases and development approaches. Questions often present a scenario and ask you to identify the phase characteristic or select the correct life cycle based on phase attributes.

Key Points to Remember (for the exam)

Cost and Staffing Pattern: In many predictive project scenarios, cost and staffing levels are low at the start, increase as work is carried out, and drop rapidly as the project or phase ends.
Risk and Uncertainty: Risk and uncertainty are highest at the start of the project or phase and decrease over time as deliverables are progressively elaborated.
Phase Attributes Adjustable: Project teams can adjust attributes of an activity, phase, or process including name, duration, entrance criteria, and exit criteria to achieve life cycle flexibility.
Phase Types: Phases can be sequential (one finishes before next starts), transitional (overlapping with handoffs), or overlapping (concurrent execution).
Life Cycle Independence: Project life cycles are independent of product life cycles; products may be part of outcomes produced by a project.
Entrance and Exit Criteria: Each phase typically has defined entrance criteria (conditions to enter) and exit criteria (conditions to complete) that can be adjusted for flexibility.
Value Protection: The project life cycle should be flexible enough to meet or exceed target objectives while protecting and enhancing the project’s value proposition.

Typical PMI Exam Example

A construction project manager is planning a bridge project using a predictive life cycle. During initiation, the project has minimal staff and low costs. As detailed design and construction begin, staffing and costs increase significantly. Near completion, costs drop rapidly as the team demobilizes. Question: Which phase characteristic does this scenario describe? Answer: Cost and staffing levels typical of predictive project phases.

PMI Exam Traps

Trap: Assuming cost and staffing are always high at the start of any project.
- Reality: In predictive projects, cost and staffing are low at start, increase during execution, and drop rapidly at phase end.
Trap: Confusing project life cycle with product life cycle.
- Reality: Project life cycles are independent of product life cycles; products may be outcomes of a project but follow different life cycles.
Trap: Believing all phases must be sequential.
- Reality: Phases can be sequential, transitional, or overlapping depending on project needs and development approach.
Trap: Thinking phase attributes are fixed and cannot be changed.
- Reality: Attributes like name, duration, entrance criteria, and exit criteria can be adjusted for life cycle flexibility.

Important PMI Connections

Related Concept	Relationship Type	Exam Attention Point
Project Development Approaches	Determines phase scenarios	Predictive vs. adaptive approaches produce different cost/staffing and risk patterns in phases
Project Life Cycle	Contains phases	Phases are components of the life cycle; life cycle provides foundational framework for managing the project
Value Delivery System	Supports	Life cycle flexibility protects and enhances the project’s value proposition
Process Groups	Aligns with phases	Phases may contain one or more Process Groups; not all phases require all Process Groups
Deliverables and Outcomes	Phase outputs	Each phase culminates in completion of one or more deliverables and/or outcomes

Quick Review Questions

In a predictive project scenario, how do cost and staffing levels typically behave from project start to phase end?
A project manager needs to adjust the timing of when a phase can begin. Which phase attribute should be modified according to PMBOK v8?
What is the relationship between project life cycles and product life cycles as defined in PMBOK v8?
A project has three phases where Phase 1 must finish completely before Phase 2 begins. What type of phase arrangement is this?
During which point in a project phase is risk and uncertainty highest according to PMBOK v8 phase characteristics?

PMBOK v8 Reference

Section 4 – Project Life Cycles Subsection 4.1 – Project Phases Subsection 4.3 – Considerations for Selecting a Development Approach