What is WBS (work breakdown structure)?

A tree that breaks down the deliverables of a project and the work needed for them from the top level to lower levels. The lowest elements are called work packages and are the units for estimating, scheduling, assigning people and tracking progress.

Japanese name: WBS(作業分解構成図)

WBS (work breakdown structure) appears in 1 practice question across 1 topic, including Software Development and Project Management.

Field: Software Development and Project Management

Try it: questions about WBS (work breakdown structure)

In a WBS, which breaks down a project's deliverables and work hierarchically, what is the element at the lowest level, used as the unit for estimating duration and cost and assigning people?

  1. AWork package
  2. BMilestone
  3. CGantt chart
Show answer and explanation

Answer: A. Work package

A WBS (work breakdown structure) breaks down the deliverables of a project and the work needed for them into a tree, from the top level to lower levels. The elements at the lowest level are called work packages, and they are the units for estimating, scheduling, assigning people and tracking progress. A milestone is a significant point in time, such as 'basic design completed', used to check progress. A Gantt chart shows the schedule with tasks drawn as horizontal bars, and is used to draw the schedule of the work broken down in the WBS.

WBS (work breakdown structure) in the explanations

Questions that mention WBS (work breakdown structure) (1)

  1. In a WBS, which breaks down a project's deliverables and work hierarchically, what is the element at the lowest level, used as the unit for estimating duration and cost and assigning people?

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Related terms

Agile development Black-box testing Boundary value analysis Branch coverage CI/CD (continuous integration and continuous delivery) Critical path method (CPM) Earned value management (EVM) Equivalence partitioning Scrum SLA (service level agreement)

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