There is no magic formula to make acquisitions successful. Like any other business process, they are not inherently good or bad, just as marketing and R&D aren’t. Each deal must have its own strategic logic. In our experience, acquirers in the most successful deals have specific, well-articulated value creation ideas going in. For less successful deals, the strategic rationales—such as pursuing international scale, filling portfolio gaps, or building a third leg of the portfolio—tend to be vague.