Strategy Canvas is built on the work of Richard P. Rumelt.
The canvas approach comes from Yves Pigneur, Alex Osterwalder, and Strategyzer.
Guidelines for framing the Challenge come from from Roger L. Martin and A.G. Lafley.
The overall approach is informed by Design Thinking and Lean Startup movements.
Special thanks for encouragement, and a hearty endorsement to Tendayi Viki.