Jesper L. Andersen:

In the recent years, I have adopted a method for system design, which I think yields good results. For a lack of better word, I overloaded “stack” yet again, and use it as a metaphor for this design.

The baseline is level 0 in the stack, and now we try to move the system upwards in the stack by adding another level. It is important to stress that transitioning is a best effort method. We make an attempt at increasing the operational level of the system, but if we can’t we stay put at the current level.