Point-to-point "no-code" integrations (e.g. basic Zapier recipes) work well for simple two-app triggers. However, when an enterprise processes hundreds of orders or complex lead lifecycles daily, fragile point-to-point connections silently break without alert notifications.
Custom API middleware provides a resilient, observable integration backbone that ensures data consistency between your public web apps, CRM, ERP, and accounting systems.
Core Reliability Principles
- Idempotency keys — Ensuring that duplicate webhook payloads never create duplicate invoices or charges
- Dead letter queues (DLQ) — Automatically capturing failed API requests and re-trying with exponential backoff
- Data validation & schema enforcement — Sanitizing user inputs before forwarding into legacy ERP databases
- Audit logging & alerts — Immediate Slack/email alerts when third-party endpoints experience downtime