This podcast episode explores the development and technical aspects of building block storage from scratch at Exoscale. The guests, who are part of the Exoscale team, discuss the challenges faced, the architecture and reliability mechanisms of the storage system, the choice of programming languages, and the performance of the Clojure proxy used in the object storage system. They also touch on topics such as deduplication, scaling cloud storage, and the importance of sharing engineering knowledge. Overall, the episode showcases the success of Exoscale's block storage system and highlights the importance of collaboration, innovation, and open source solutions in the industry.