Areas critical to strategy execution

First question is “Why are all these areas critical to strategy execution? “Second question “Are they equally important? “Third question  “Which of these is most helpful in managing innovation?” ( read article )In answering the above three questions please make sure you do the following three things:1)     Consider each of the three areas (structure, leadership, managing internal operations), identify their role in strategy execution and their interrelationship 2)     Identify how external factors relate to or impact on these internal areasWhich of these areas do you think is most critical to effective strategy execution, innovation and why? ( using relevant examples )This question is for an example