The project management project summary breakdown structure refers to a project management tool that is used for the purposes of providing the project management team and or the project management team leader with a detailed and designed work breakdown structure for the given project in question. Typically the project summary breakdown structure is only developed to a certain point within the structure of the project, in most cases no farther than the project level of subproject within some legs of the WBS. IN most of these cases in which the detail level is to the level of subproject, the details of those particular subproject is typically provided to the project management team and or the project management team leader through utilization of the previously determined contract work breakdown structures. The project summary breakdown structure is also known by the five letter anagram PSWBS.
This term is defined in the 3rd edition of the PMBOK but not in the 4th.