I need my application to accept payments through the DANA e-wallet and I want the flow to be as fast and friction-free as possible—no extra screens, no redundant data entry, just a quick-pay button that brings users straight to DANA’s confirmation page and then returns the result to my system. Scope • Connect to the official DANA API or SDK, follow their security requirements, and enable the “Pembayaran cepat” feature only. • Return clear success / failure callbacks so I can update orders immediately. • Document every endpoint, parameter, and environment variable so I can maintain the integration later. • Provide a short test script or Postman collection that shows the end-to-end flow working in sandbox and production. Acceptance criteria 1. A user can initiate payment from my app, complete it in DANA, and land back with a verified transaction ID. 2. Processing time from click to confirmation stays under five seconds in normal network conditions. 3. All credentials and keys are stored via environment variables, never hard-coded. 4. Full documentation and hand-off call delivered at project close. If future phases are needed—transaction history or automated notifications—I’ll open new milestones, but for now the focus is solely on the quick-pay path.