The work breakdown structure is a tool that is used to assist in defining and then assembling similar tasks together. This helps project managers and teams manage the entire scope of the project. The goal of the work breakdown structure is to help teams figure out what the major parts of the project are and what milestones need to be met to achieve these.
To assist in creating a modular work breakdown structure, the systems development life cycle can be a great tool. The systems development life cycle is used to break down a large project or phases of a project into smaller, modular components. This allows pieces of the project to be adequately dealt with before moving on to subsequent parts.
Generally, the system development life cycle allows teams to change or create new systems or new processes. This methodology gives teams more control over the entire process by allowing them to focus on individual pieces of the puzzle.
Basically, a project manager can look at one module of the project and ensure that there are enough resources to finish that section of the project. It also ensures that the given modular section is completed before another task is added to the pack.