Okta now requires Bring Your Own Telephony (BYOT), enabling users to integrate any telephony service provider with Okta's authentication and verification systems. This document covers how to BYOT with the Twilio Verify API for SMS or Voice calls using Okta's telephony inline hook, a serverless environment that empowers developers to quickly create production-grade applications. The process involves creating a Twilio Function to send verification codes, configuring an Okta Inline Hook, previewing and testing the telephony inline hook, sending feedback to Twilio Verify, and verifying the event hook. With this integration, users can log in to their application with multi-factor authentication enabled, receiving a one-time password via Twilio Verify, ensuring security and reliability for their telephony system.