Are these three separate layers?#
Not necessarily. Mission leadership, people leadership and system management are responsibilities, and in a small organisation one manager can hold all three. Each needs a named owner, because they run on different clocks: the mission on its deadline, people development over years, the system on its improvement cycle. Bundle them without naming owners and the urgent one wins every quarter.
Why must decision rights be explicit?#
Because the three will disagree. Mission leadership wants the outcome now. People leadership wants a junior engineer to learn by doing the slow version. System management wants one rule for every mission. Decide in advance who settles each class of conflict. The Spotify model is the warning: former Spotify coach Jeremiah Lee reported that its chapter leads had no real accountability for delivery.
System management, which sets the delegation boundary and allocates attention across missions, is the newest of the three. System management is also a leadership problem before it is a tooling one.