There are various milestones in each project's plan. These are used to show how far the team has progressed in the project's development. If the mobile application must have six completely functional panels, for example, each panel can be broken down into milestones. As a result, after one panel has been successfully created, the first milestone has been reached. Milestones are commonly used to illustrate progress to upper management and clients since they are easier to explain than smaller tasks or components of the project.