Taking the perfect decision with incomplete information is impossible. Therefore, you need to develop systems helping you to take the right decision considering the amount of information you can gather, and the resources you have at hands (time, people, money, etc.).
This Notion is dedicated to decision making. You'll find the tools we used to use and use at comet, other tools that can be interesting to try, and a library of articles and books about decision making.
I Hope it'll help.
Best articles about decision making