Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.A systems engineering process is a process for applying systems engineering techniques to the development of all kinds of systems. Systems engineering processes are related to the stages in a system life cycle. The systems engineering process usually begins at an early stage of the system life cycle and at the very beginning of a project, but as stated by Bahill and Briggs, systems engineering can also start at the middle. A variety of systems engineering processes have been proposed by different organizations.