PERT diagrams are popular project management tools. Program Evaluation Review Technique, or PERT, has been in usage since the 1950s and is most popular in the fields of business management and quality control. At their most basic level, PERT charts are graphical representations of a project’s tasks and schedule. You may use a PERT diagram throughout an entire assignment, or decide that it’s appropriate for only the most crucial portions of a project. Milestones of the project are typically represented by circles, rectangles, or tables. Click here to read more.