Thierry Carrez discusses the evolution and impact of open infrastructure, primarily focusing on OpenStack and Kubernetes, which have revolutionized infrastructure as a service (IaaS) and application deployment. The document highlights significant growth in OpenStack usage with a 66% increase in users and 25 million CPU cores managed in 2021, alongside a surge in new public clouds aimed at digital sovereignty. Carrez encourages further participation and adoption of open infrastructure to foster innovation and interoperability.