A 360 performance review measures employee performance typically using feedback from six to 12 people. It also includes an employee self-evaluation.A stepbystep guide to creating a 360 degree feedback process and a timeline on how long each step might take within your organization. This form of performance information is actually quite common but usually used only as an informal part of the supervisor-employee appraisal feedback session. 360 Degree Feedback is an assessment system or process in which employees receive confidential, anonymous evaluations from the people who work around them. 360degree feedback is a method of gathering feedback from multiple sources to aid in employee evaluation and development. A 360 evaluation is an assessment of the various aspects of an individual's performance, development, and long-term potential. This section provides instructions for completing the online evaluation.