The KSS for SoS, proposed in the paper8, applies original lean concepts to coordinate work queues. The KSS
provides a set of guidelines and work prioritization techniques based on lean concepts for single system
development, but extends it to multiple teams and levels within the SoS. Key to this approach was defining a
mechanism to relate single system tasks to original SoS capabilities and to assign value to a task based on both its
value to the single system as well as its associated SoS value.