How do you make money on securitization?

So, how exactly does one make money through securitization? I understand it's a process of pooling assets and turning them into securities, but what's the financial mechanism behind it that allows investors to profit? Are there specific types of assets that are more lucrative for securitization than others? And how does the risk associated with these securities get managed to ensure returns for investors? I'd love to hear a breakdown of the process, from start to finish, and understand the key factors that drive profitability in this area.