The five project management process groups are:
The general principle behind the project management process groups is simply plan, then act: the OODA loop and the Plan Do Check Act cycle are two methodologies that can help achieve the balance between planning and acting.
The individual processes that make up the process groups are described in terms of their inputs and outputs. If you are preparing for the PMI exams, you will need to learn some of this by heart. For real-life project management, we recommend reading the process groups in this chapter and understanding the broad principles in them, but not trying to learn all the detail. Pick and choose what you think will be useful, based on your experience of project management in your industry, and refer back to this chapter for further information if you need it. The process groups allow a project manager to gain a sense of proportionality: to determine the balance between thinking and doing.
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