Mergers and acquisitions (M&As) have been playing a very significant role in the capital market. Many companies regard mergers and acquisitions as an important way for their business expansion and transformation. This paper begins with a review of literature on firm’s motivations of and outcomes in M&A, and followed by a critical examination of three case studies of actual M&A transactions based on the insights provided from the literature review. For each case study, a firm’s motivations and related managerial initiatives for M&A activities were examined, followed by an assessment of the firm’s post M&A performance results. This allows the study to discerns the insights of why and how a firm proceed in its M&A transactions from its strategic intent to its post M&A managerial actions. Collectively, the results show that the key drivers for a firm’s M&A successes rest on a firm’s abilities to manage the M&A activities consistent with its strategic intent (e.g., creating synergies or transformation through diversification) and followed by its post M&A integration efforts in achieving its strategic intent.