This document provides an overview of organizational development (OD) and organization interventions (OI). It discusses the meaning and objectives of OD, the assumptions and values, the process, and effectiveness. It also examines the meaning and assumptions of OI, factors that help change agents, and examples of interventions at different levels including individual, group, and structural. The goal of OD is to increase an organization's effectiveness and ability to change, while OI are structured activities used by change agents to facilitate improvement.