According to the PMBOK® Guide and the Standard for Program Management, a program is defined as a group of related projects, subprograms, and program activities managed in a coordinated way to obtain benefits not available from managing them individually. Consequently, the measurement of its success is fundamentally different from project success.

Benefit Realization: The primary measure of program success is its ability to deliver the intended strategic benefits and the degree of efficiency achieved by the coordinated management of its components.

Coordinated Effort: If three projects are managed under a program, success isn ' t just finishing all three; it is the synergy created between them—such as shared resources reducing overall costs or integrated deliverables creating a new organizational capability that a single project could not produce.

Strategic Impact: Program success is often measured by how well the program realized the " Business Case " and how effectively it transitioned those benefits into the organization ' s ongoing operations.

Why other options are incorrect:

Option B: By the quality, timeliness, cost-effectiveness, and customer satisfaction: This is the traditional definition of Project Success. Projects are measured by " Triple Constraint " (scope, time, cost) and meeting specific technical requirements.

Option C: By completing the right projects to achieve objectives: This describes Portfolio Success. Portfolios focus on high-level strategic alignment—choosing the " right work " to do—rather than the coordinated delivery of related work.

Option D: By aggregating the successes of the individual projects: This is a common trap. A program can have several successful projects but still be a " failure " if the projects were not coordinated effectively or if the overarching strategic benefit (the reason the program existed) was never realized.