Evaluate Stripe Capital Loan Performance

You're a data analyst embedded in the go-to-market analytics group of a payments platform similar to Stripe. The business lends working capital to merchants. Merchants get cash upfront, and repayment is automatically taken as a share of their future card-processing volume until the principal plus interest, or a fixed fee, is fully recovered. Please answer the following questions:

1. Which metrics would you choose to track whether this loan product is doing well?
2. Imagine total revenue from the loan product dropped last quarter. How would you go about finding the root cause?
3. Which segmentations, data checks, and causal analyses would help you separate product, risk, pricing, merchant-mix, and macroeconomic explanations from one another?
4. Depending on the root cause, what recommendations would you propose? Overview: This prompt assesses a data analyst's ability in product analytics, metric definition, cohort and segment analysis, and causal inference for a working-capital lending product.