In this adaptation from the new book, Your Strategy Needs a Strategy (HBR Press, 2015), BCG strategy experts make sense of the all the different, and competing, approaches to strategy: Which strategy is right for your business? When and how should you implement it? The practical tool offered here helps executives answer such questions as: What replaces planning when the annual cycle is obsolete? Where can we — and when should we — shape the game to our advantage? How do we simultaneously implement different strategies across different business units?