The acronym WIP stands for Work In Progress. WIP is the number of task items that a team is currently working on. It frames the capacity of your team’s workflow at any moment. Limiting work in progress is one of the core properties of Kanban. It allows you to manage your process in a way that creates a smooth workflow and prevents overloads.
For more, check out our article: https://kanbanize.com/kanban-resources/getting-started/what-is-wip