Strategy is the plan for fulfilling the vision. It is about getting from point A to point B, in a somewhat predictable manner, and with a thoughtful use of resources.
The world is moving faster, and is more fluid, with each passing day. It is more important to have a direction to be pursued, and principles to use along the way, than a firm plan.
An organization should strive to have a management team that will recognize when a plan needs to be adjusted, then make the adjustment and move forward on it. In mature organizations, this has become a necessity; in smaller organizations where the Board is more involved, it is also helpful.
Download Strategy Development vs. Strategic Planning for more.