Enterprise truth: Integrations fail when contracts are unclear. Make compatibility a product feature.
Part of the Enterprise SaaS Architecture Playbook (2026 Edition)
This guide expands on the broader framework outlined in our Enterprise SaaS Architecture Playbook — including API governance, versioning strategy, event-driven integrations, and reliability patterns used by enterprise teams.
1) Start with contracts, not endpoints
- Define stable resource models (and what “breaking change” means).
- Version intentionally (URL, header, or media type—just be consistent).
- Document tenant context and permission rules explicitly.
2) Choose the right integration shape
- REST: best for request/response workflows.
- Webhooks: best for event notifications, requires retries + signatures.
- Events/queues: best for reliability + decoupling at scale.
3) Reliability is part of the interface
- Idempotency keys for writes
- Rate limits + clear error semantics
- Retry policies + backoff guidelines
- Webhook signing and replay protection
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