Overview Twilio enforces per-resource rate limits. At scale, 429 errors are expected behavior — not bugs. This skill teaches the patterns that prevent production failures: exponential backoff, throughput management, and resilient callback handling. 429 concurrency errors are not well documented — implement exponential backoff with ±10% jitter. --- Prerequisites - A working Twilio integration (any product) - Understanding of your expected volume (messages/sec, calls/sec) - StatusCallback URLs configured — see , --- Key Patterns 1. Exponential Backoff with Jitter When you receive a 429 (Too Man…