There are 4 repositories under iot-solutions topic.
Open-source IoT Platform - Device management, data collection, processing and visualization.
The Internet of Things Event Learning Path is designed for Solution Architects, Business Decision Makers, and Development teams that are interested in building IoT Solutions with Azure Services.
Rapid Development Framework for distributed Industrial IoT Solutions
Azure IoT Device Simulator (.NET 5) integrating IoT Plug and Play (IoT PnP) capabilities. The simulator allows referencing DTDL v2 models and the telemetry, properties and commands will be created dynamically.
IoT Big Picture - Guides, Links & Resources