We are excited to announce the General Availability of AWS IoT Core Device Advisor support for MQTT over WebSocket. AWS IoT Core Device Advisor is a cloud-based, fully managed test capability that validates AWS IoT device software for reliable and secure connectivity with AWS IoT Core. With this update, customers can run all three test suites of AWS IoT Core Device Advisor – qualification, custom, and long duration tests – using Signature Version 4 for MQTT over WebSocket. Signature Version 4 is a protocol for authenticating inbound API requests to AWS services, in all AWS Regions.
Source:: Amazon AWS