Mansour Dia, an investor at Langdon Equity Partners and former M&A analyst at Constellation Software, discusses the intricacies of software acquisitions and the opportunities within European small-cap tech stocks. He emphasizes the importance of cash flow over earnings and the value of personal relationships in investments. Mansour shares insights on the growth potential of firms like Topicus and Hypoport, and highlights how extensive travel aids in understanding local markets, ultimately leading to informed investment decisions.