American Express interview questions

So as I said above the guy was asking me a lot of questions about my lost project. Then there were questions about different decision trees algorithms like Random Forest, XGboost, model interpretation

How does American Express make money? What user acquisition strategy would you create? How would you measure it? What is the process you would take to develop a new campaign? Tell me about a time you used analytical data to make a decision. Tell me about a time you've been inn