“A deliverable-oriented hierarchical decomposition of the work to be executed by the project team to accomplish the project objectives and create the required deliverables” - PMBOK
“A Work Breakdown Structure (WBS) is a hierarchical structure of things that the project will make or outcomes that it will deliver”
“A work breakdown structure defines all the things a project needs to accomplish, organized into multiple levels, and displayed graphically.”
This is one of the fundamental features of a WBS: it describes deliverables, not the activities necessary to get there. Every item in the WBS must correspond to an end product (real or virtual). If there are any verbs in your WBS, then you’re doing something wrong. : WBS 는 최종 산출물을 설명하는 것이지 어떤 행위를 해야하는지 설명하는게 아니다. 모든 WBS의 항목은 최종 산출물에 대응한다. 따라서 각 항목에 동사를 사용하지 말고 명사를 사용하라.
Aim for between 3-5 levels. 3~5 레벨까지만 하라.
This is why it is crucial that you follow the 100% rule. Every level should be everything you need to deliver. Anything beyond that should be scrapped. 하위 항목은 상위항목을 만드는 100% 여야 한다.
Keep All Elements Mutually Exclusive. Every element should be independent. You shouldn't need any input from any other element to complete it. If you do, it's better to combine the two elements together and push the work package up a level.