A 360-degree appraisal is a performance review method where an employee receives feedback from multiple sources: supervisors, peers, subordinates, and sometimes, clients. This holistic approach provides a comprehensive view of the employee's strengths and areas for improvement. It encourages open communication, fosters a culture of continuous development, and mitigates biases by balancing perspectives. Typically conducted via surveys or questionnaires, the feedback is then aggregated and analyzed to guide personal and professional growth, ultimately enhancing overall organizational performance.