The world is rapidly changing due to the development of digital technology, global connectivity, and consumer behavior. More companies are shifting to experience-centric thinking from the process-centric approach that was prevalent in the 20th century. New businesses are constantly sprouting and disrupting every single industry with their innovative and out-of-the-box thinking. To remain ahead of the game, many companies embark on mergers and acquisitions strategies. It is a highly compelling alternative to develop capabilities and increase market share in a very short period of time. While companies do a great job in going through the process of acquisition (buying of a company - the WHAT), they really struggle to consolidate (integration of two companies - the HOW). This results in disastrous rates of failure. A significant number of failures can be attributed to people, leadership, culture, and organizational design. To have an effective post-merger or post-acquisition integration, a sound change management approach is required. However, this industry is plagued with a lack of awareness, inconsistency of understanding, and inability to quantify the impact results. This leads to insufficient attention to change management in M&A. In order to assess, how deep this problem exists, Fifth Chrome, an M&A advisory company embarked on conducting insights-based research on the topic. This book is the result of the conducted research. The research covered 18 countries, number of industries and captured input from 50+ industry practitioners.