Twilio Microvisor now supports the Message Queuing Telemetry Transport (MQTT) protocol on the FreeRTOS real-time operating system, enabling developers to create secure MCU-powered IoT devices that utilize MQTT for data transfer and communication between connected devices. With this support, Twilio Microvisor provides a hardware-protected hypervisor for microcontrollers to achieve robust and secure connectivity at scale, including features such as unbrickable over-the-air firmware updates, secure remote live debugging, and industry-leading device-to-cloud security. The platform now includes sample libraries and application source code to help developers accelerate the building of secure IoT devices that utilize MQTT, and a guide is available in the documentation to show how applications can connect to public and private MQTT brokers, subscribe to topics, post messages, and receive notifications. Developers can explore Microvisor on an STM32U585 MCU by signing up for the Twilio Microvisor Beta Program and receiving a free development board.