Day 70 of my #100DaysOfCloud journey! Today I focused on the business side of engineering: Monetization. I wanted my React dashboard to show tailored financial offers (like high-yield accounts or cheap transfer apps) based on the user's actual spending habits. The Backend Logic (Python + AWS Lambda): Instead of random ads, I built a smart router. It calculates the user's projected surplus and injects a specific JSON offer. Python def generate_financial_offers(fin_score, surplus): offers = [] # Investor Profile if surplus > 1000 and fin_score >= 70: offers.append({ "title": "Make your surplus work for you", "description": f"You have ~{surplus}€ uninvested. Earn 4% APY.", "cta_text": "Explore Brokers" }) # High-Burn Profile elif surplus < 200: offers.append({ "title": "Lower your banking fees", "description": "Stop bleeding money on transfers.", "cta_text": "Open Zero-Fee Account" }) return offers Enter fullscreen mode Exit fullscreen mode Why this matters: This is the Adapter Pattern.…