Moving into Cloud posses various challenges and symptoms of negative impacts on Cloud transformation will only surface after moving into Cloud, which is often too late. Therefore there are lots of due diligence needs to performed in the formation of Cloud strategy and most of the time it's a non-trivial exercise for a large enterprise. The story I published as Enterprise Cloud Transformation - A recipe for successful strategies walks through necessary steps to be considered before formalising a cloud strategy for an enterprise. Happy reading!