When employing a work breakdown structure (WBS), a work package is a sequence of actions that leads to a deliverable. to map your project scope, It’s a sub-project of the broader project in some ways.
However, there is a distinction to be made between a work package and a project activity. In the WBS hierarchy, a work package is higher than an activity.
This distinction is crucial for project managers, but it isn’t necessary for a project’s success. Whatever language you use to identify these building blocks as you fill up your WBS, they all go to the same place: your project’s completion.
In earned value management projects, work packages are used to integrate schedule, cost, and scope management data in order to measure project performance.