Integrations that scale

How to build integrations that don’t silently break: webhooks, retries, idempotency, and observability.

Jan 07, 2026integrationsapi-development

Integrations tend to “work” right up until they don’t. The fix is not more glue code—it’s an integration approach that assumes failure and recovers gracefully.

If you need execution help: Integrations and API Development.

Design for failure (because it will happen)

Network calls time out. Vendors change payloads. Rate limits kick in. Your integration should handle these cases explicitly:

  • Retries with backoff for transient failures
  • Dead-letter queues for messages that need manual review
  • Alerting so failures don’t sit for days

Use idempotency everywhere you can

When you retry, you must prevent duplicate writes.

  • For API endpoints: accept an idempotency key
  • For webhooks: dedupe by event id + timestamp window

Prefer events over polling (when possible)

Polling wastes resources and creates delay. If the platform supports webhooks, use them, and build:

  • Signature verification
  • Schema validation
  • A fallback for replays/resends

Add observability from day one

Minimum recommended:

  • Per-integration logs with a correlation id
  • Error rate alerts
  • A dashboard that answers “what’s broken right now?”

Tie integrations to business outcomes

Integrations exist to reduce friction. Two examples:

  • Faster lead routing improves close rates
  • Cleaner attribution improves budget decisions

If you’re also improving performance/SEO, connect tracking to your integration work so you can measure impact.

Related: Performance SEO.

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