A value breakdown structure (VBS) is a project management technique[1] introduced by Stephen Devaux as part of the total project control (TPC) approach to project and program value analysis.
The concept has similarities with the deliverable-oriented work breakdown structure (WBS) decomposition which is used in project management and systems engineering to break down a project into smaller components in a tree structure that represents how the work of the project will create the components of the final product. Resources and cost are typically inserted into the activities in a WBS, and summed to create a budget both for summary levels (often called "work packages") and for the whole project or program.
Similarly, a value breakdown structure will provide the expected value-added of each activity and/or component of the project (or projects within a program).