A policy is a set of rules, values, concepts, or frameworks that an organization adopts or creates in order to accomplish long-term objectives. All important decisions inside the organization are directed and influenced by policies, which also serve to maintain all actions within predetermined boundaries. On the other hand, processes illustrate how a function or service is operated and represent a series of actions that when taken as a whole provide a particular result.
A procedure is a way of carrying out a work that includes steps and instructions for every component of the task. Once established, procedures are frequently followed consistently to ensure a common understanding of what people should do in various situations.