More and more companies are relying on mergers & acquisitions (M&A) as a competitive growth strategy. Since 2012, M&A activity has increased dramatically in both number of deals and size of transaction, with the yearly value of global M&A deals tracking above $4.5 trillion for the past four years. These are heady numbers and 2018 is expected to continue apace. Yet when mergers are not done correctly, the end result can be at best uncomfortable, and at worst devastating to both companies.