A work-breakdown structure (WBS) in project management, is a deliverable-oriented breakdown of a project into smaller components. A work breakdown structure is a key project deliverable that organizes the team’s work into manageable sections.
Short:
MS project and Primavera are hard to maintain, you need a expert to make them really helpful for your project. MS Excel works great for WBS and planning, but it’s not designed for that purpose. The goal of weekplanner is to create a simple overview of all the Level 2 containers, while it is possible to fill those containers with Level 3 data.