Real-Time Payments Architecture

What You Can Do After This Chapter

Learning objective. Learner designs real-time payments architecture, covering 24 by 7 availability, instant clearing, liquidity, and failure handling, and explains how it differs from batch systems. Learner applies this skill in realistic banking scenarios, with clear examples and correct terminology throughout.

Practical assessment. Learner designs a real-time payment system for 200,000 transactions per day with a 5 second end-to-end target, covering intake, screening, clearing, and settlement. Learner then explains the liquidity impact of instant settlement versus batch, calculates the peak-hour load, and draws the failure flow when a beneficiary bank is unreachable. Learner submits all work with sources, calculations, and assumptions stated clearly, and reviews the result against the chapter checklist before submission.

Expected deliverables.

• Real-time architecture diagram
• Peak-hour load calculation
• Liquidity impact comparison with batch
• Beneficiary unreachable failure flow

Completion criterion. Learner designs for the stated load and latency, calculates peak load correctly, and explains the liquidity difference and the failure flow accurately. Completion is judged on accuracy, completeness, and clear written explanation throughout.