The talk is about Bottle Rocket, a container-optimized Linux distribution for hosting containers. The speaker explains the challenges with using general-purpose Linux distributions for container workloads and how Bottle Rocket addresses those challenges. He describes the architecture of Bottle Rocket, including the use of host containers for managing the node and the security measures in place. He also discusses the different variants of Bottle Rocket and the process for upgrading nodes. The speaker encourages involvement in the project, whether through contributing code or participating in community meetings.