The Two Dimensions of Project Success: Management vs. Outcomes

PMBOK v8 Definition

Project success has two distinct dimensions that must be evaluated separately. The first dimension focuses on the success of project outcomes, which measures the project's ability to achieve significant impact and contribute to organizational success through business value, strategic goals, and sustainability objectives. The second dimension focuses on the efficiency of project management processes, measured by how well the project adheres to constraints such as cost, scope, time, and quality. Focusing on both dimensions is essential for delivering value and success to the organization.

Why It Matters for the Exam

This concept appears frequently in PMI exam questions testing your ability to distinguish between project management success (process efficiency) and project outcome success (business value delivered). Questions often present scenarios where one dimension fails while the other succeeds, requiring you to evaluate overall project success correctly. Expect situational questions where you must determine whether a project is considered successful based on these two distinct criteria.

Key Points to Remember (for the exam)

Two Distinct Dimensions: Project success = Success of project outcomes + Efficiency of project management processes. Both must be assessed, but they can be independent.
Outcome Success is Critical: The success of project outcomes is critical to the targeted business value, regardless of when that value is realized. A project can deliver exceptional value even with poor management.
Management Success Measures: Adherence to constraints (cost, scope, time, quality). This assesses delivering on time, on budget, and to required standards.
Outcome Success Measures: Achievement of strategic goals, business value, sustainability objectives, and significant impact on the organization.
Sydney Opera House Example: Initial budget AUS$7 million, final cost AUS$102 million; expected 4 years, took 14 years. Management was a failure, but the outcome exceeded expectations—now a UNESCO World Heritage site visited by 10.9 million people annually.
Montreal Overpass Example: Well-managed construction (on time, on budget) but the outcome failed—the overpass did not align with design plans and had to be demolished after one year.
Balanced Focus Required: Companies need both dimensions to complete projects effectively AND realize strategic goals for sustainable growth and competitive advantage.

Typical PMI Exam Example

A construction project was completed 6 months late and 40% over budget. After completion, the facility generates $50 million in annual revenue and becomes a national landmark. The project manager asks if this is a successful project. According to PMBOK v8, the correct answer is: The project management was a failure, but the project outcome was a success—both dimensions must be assessed separately.

PMI Exam Traps

Trap: Assuming a project is a complete failure because it exceeded budget and schedule. Reality: The project may still be successful if the outcomes deliver exceptional business value, regardless of when that value is realized.
Trap: Thinking that well-managed projects (on time, on budget) are automatically successful. Reality: A well-managed project can fail if the outcome does not meet strategic goals or deliver expected value (e.g., the Montreal overpass).
Trap: Believing that project success is determined only at project closure. Reality: Outcome success may be realized years after the project ends (e.g., Sydney Opera House), and value can exceed initial expectations.
Trap: Confusing "project management success" with "project success." Reality: These are two separate dimensions. Project success includes both management efficiency AND outcome effectiveness.

Important PMI Connections

Related Concept	Relationship Type	Exam Attention Point
Business Value	Outcome measure	Project outcomes must deliver targeted business value; value may be realized after project completion
Stakeholder Expectations	Management measure	Management success ensures stakeholder expectations are met through adherence to constraints
Strategic Goals	Outcome measure	Projects exist to achieve strategic goals; outcome success measures this achievement
Sustainability	Outcome measure	Sustainability-oriented project management integrates environmental goals into outcomes
Constraints (Cost, Scope, Time, Quality)	Management measure	These are the four constraints used to measure management process efficiency

Quick Review Questions

A project was delivered on time and under budget, but the resulting product is not used by the intended customers and generates no revenue. According to PMBOK v8, how should this project's success be evaluated?
The Sydney Opera House project took 14 years instead of 4 and cost AUS$102 million instead of AUS$7 million. Today it is a UNESCO World Heritage site. Which dimension of project success failed, and which succeeded?
What are the two dimensions that must be assessed when determining project success according to PMBOK v8?
In the Montreal overpass example, the project was well-managed but the outcome failed. What caused the outcome failure?
A project manager reports that a project is successful because it was completed within budget and on schedule. Is this assessment complete according to PMBOK v8? Why or why not?

PMBOK v8 Reference

Section 2.1 – Project Success (The Standard for Project Management, PMBOK v8)