Answer this question and you’re almost done with strategy: "Can you exploit the crisis?" If you can—and since you must go mobile and responsive—make this the cornerstone of your strategy. If not, then apply a single set of principles across all your technologies. It’ll help. If not that, then the strategy is to have each team figure it out for themselves. Not ideal, but at least you have a decision.
Key Insight: The easiest way to build four houses that look the same is to have teams build them all with wood. It works way better than saying, “brick, stone or stucco. Whatever works for you.” It’s hard to get commitment to a big technology change, especially one involving decisions across devices. But it’s worth the time and trouble.
Guiding Design Principles help everyone look at the problem the same way. If you’re moving your apps to mobile and responsive, your design principles need to reflect this strategy.