How Payment Gateways Work (UPI, Razorpay & Stripe Explained)
Let’s start with something we all do almost daily… You buy something online. You click: “Pay Now” And within 2–3 seconds: Payment Successful Simple, right? But behind that tiny button… There’s an entire system working insanely fast: Banks talking to banks Security checks Encryption Payment verification Fraud detection Transaction settlement And honestly… When I first …









