Program evaluation is a systematic method for collecting, analyzing, and using information to answer questions about projects, policies, and programs, particularly about their effectiveness and efficiency. It is essential for understanding the impact of interventions and for making informed decisions about future program development and resource allocation.
Impact assessment is a systematic process used to evaluate the environmental, social, and economic effects of a proposed project or policy before it is implemented. It aims to anticipate and mitigate negative outcomes while enhancing positive impacts to ensure sustainable development.