The process approach is a way of thinking that may be used to comprehend and plan the sequence and interactions of processes in a system. It is a way for planning processes and their interconnections as part of a management system. The process approach contrasts with the flow approach, which is concerned only with the analysis of flows within a system. In management science, the term "process" describes any series of steps or activities performed to achieve an end result. In its simplest form, a process consists of a single step that produces a single product. However, processes often involve several steps, some of which may cause a transformation of one or more inputs into outputs or may even generate additional inputs for further processing. For example, the steps of designing, manufacturing, marketing, and selling a product comprise a process for producing a final product. Each step of this process can be viewed as a sub-process that, when put together, form the overall process. Process analysis is the study of processes and their components. This includes the identification of all relevant processes, the determination of these processes' relationships, and the development of diagrams (or models) that illustrate these relationships. There are two types of process analyses: functional and organizational. In a functional analysis, the goal is to identify all possible functions that can be performed by a group of people or an organization.