There is possibly not a topic in business that is more written about than 'strategy'; except perhaps 'leadership.
What is 'strategy'?
In my view, all projects are a response to a strategic need: they build capability for mission delivery into the future.
Some concepts of strategy have a static feel to them: Porter's 5 forces, for example. I know Porter's model is not static, but it tends to a static iconography.
This diagram includes the dynamic forces that influence strategic thinking in business. It could be though of as the third dimension to a typical Porter 5 forces diagram:
The 'capability platform' is created by capital investment, responsive organisation structures and processes, and the right people to deliver skills that make strategic sense in the business environment.