With this theoretical background, the eBook welcomed scholars to submit their case study research in M&A themes. In this eBook, five articles examined how do interfirm trust and accounting practices, external stakeholders, firm-specific factors, the role of integration manager having board membership, and the relationship between the level of acculturation in post-acquisition and the maturity levels of project management team, affects the success of M&A process, i.e., negotiations to post-merger integration? The remaining two articles explored what drives emerging economy acquisitions in developed economies? We believe that the selected papers published in this eBook constitute a representative sample of what is welcome and we hope readers will enjoy reading them.