The original title is: "25 WordPress PMS Integrations Later: What Actually Works (And What Doesn't)"

Short summary

A developer with 9 years of experience reviews 25 Property Management System (PMS) APIs integrated with WordPress booking engines for vacation rentals, rating each on API quality, documentation, and developer experience. The article details a battle-tested architecture using custom database tables, event-driven webhook sync, two-phase real-time verification, and fallback cron jobs to handle the inherent challenges of real-time availability, massive data payloads, and inconsistent APIs. It concludes with practical development rules: assume webhooks will fail, enforce idempotency, isolate service layers, log everything, and test with real data.

• •Reviews 25 PMS platforms with candid API quality assessments from real integration experience
• •Proposes a four-step architecture: custom DB tables, event-driven webhook sync, two-phase verification, and fallback cron
• •Lists five hard-won rules for developers: assume webhook failures, enforce idempotency, isolate services, log everything, test with real data

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