Managing Organizational Change in PMI (Post-Merger Integration) refers to the process of guiding people, processes, and culture after a merger or acquisition. It focuses on aligning employees, systems, and business practices from both organizations to work as one. Key activities include communication planning, leadership alignment, training, and stakeholder engagement. It also involves addressing resistance to change and ensuring smooth cultural integration. Effective change management helps reduce disruption, improve employee adoption, and maintain productivity during transition. Managing Organizational Change in PMI is essential for achieving merger success and realizing expected business synergies.