Resumen
The purpose of this article is to present the main aspects regarding project planning. This study is generally based on the fourth edition of the Guide to the Project Management Body of Knowledge (PMBOK Guide) developed by the Project Management Institute (PMI) in 2008. According to this edition of PMBOK, project planning involves a group of processes required to establish the scope of the project, refine the objectives, and define the actions that must be undertaken to attain the objectives of the project.