Another challenging task in portfolio management is the demand – capacity balance. A lean portfolio management system is built on a pull system instead of a push system. Teams working with the Kanban system pull work as represented and prioritized on the Kanban boards. Once priority is defined, the speed items develop to the next status and finally to done depends on the resources made available. The goal of a lean portfolio management is to create the maximum outcome with a given capacity. What “given capacity” is depends on the investment management is willing to invest.