Fast DDS and Micro XRCE-DDS are components of the FIWARE platform, and the official FIWARE interface to robotics, through ROS 2.
The FIWARE Platform is a major bet of the European commission, and this platform is being used in many European Projects for smart applications in multiple sectors, including Smart cities, Industrial Automation, IoT, and Robotics.
The European Commission supports ROS funding many ROS-Related projects, including Micro-ROS and DIH^2, the EU Digital Innovation Hub for Robotics, an initiative which brings ROS to the European SMEs.
It is worth comment also the bet of the DIH^2 project. Their motto is “we accelerate factories through robotics”, and they have a complete network of centers driving the adoption of their FIWARE based platform, including ROS 2, Fast DDS, Micro-ROS, The ROS 2 Integration Service, etc:
For the records, you can find here the recently updated and polished documentation on how to integrate your ROS2/micro-ROS application with the FIWARE Orion Context Broker via SOSS!