Project managers use a work breakdown structure to break down the larger phases of the project into smaller tasks, which can then be scheduled and easily assigned. The work breakdown structure templates are a way to visualize your deliverables and the tasks needed to complete them. This is a key element in splitting deliverables into smaller tasks so that the work is manageable.
The purpose of the Gantt chart is to show multiple activities or tasks in one chart along with their timelines; scheduling is a major activity in any project. Simultaneously, a work breakdown structure is used to divide the complex activities in a project into simpler ones. A WBS also shows the amount of time required to complete a task or subtask.
A good Work Breakdown Structure is created using an iterative process by following these steps and meeting these guidelines:
There are two different work breakdown structures: 1) Deliverable-oriented WBS and 2) Process-oriented WBS.
A deliverable-oriented work breakdown structure decomposes the project scope into smaller and more manageable deliverables. On the other hand, a process-oriented WBS defines the project scope of work in terms of process steps. It defines what process steps need to be taken to deliver each of the project deliverables.
Usually, there are three levels of task decomposition in a work breakdown structure. You can make more levels in case of extremely complex projects. For most projects, however, three levels will be sufficient.