TeraFlow project is developing a distributed Software-Defined Network (SDN) controller targeting a tera of managed flows in beyond 5G networks. In this tech talk, after an overview of what is Software Defined Networking, Traffic Engineering, and the protocols involved, Sébastien Merle from Stritzinger introduced TeraFlow’s architecture, the concerns, constraints, and challenges encountered. To finalise, he performed a live demo showing the progress so far and presented the open-source projects created or improved as part of the development.