When an investor and a startup founder start the process of closing an investment deal, both of them should be doing due diligence to make sure that the foundations of the deal are coming together. What are the issues that an investor is going to want to see the details of? We know from Angel Investing Research that doing reasonable due diligence improves your investment outcomes. This discussion will explore the process of doing due diligence. All good Angel Investments involve doing reasonable due diligence.