The PBS Foundation is a non-profit organization that plays a crucial role in the Ethereum ecosystem, specifically focusing on the Proposer-Builder Separation (PBS) and MEV-Boost infrastructure. Originally initiated by Flashbots, the foundation is dedicated to maintaining and enhancing the software and market mechanisms that facilitate over 75% of transactions on Ethereum's blockchain. By fostering a collaborative environment, the PBS Foundation aims to ensure the security, resilience, and efficiency of the orderflow pipeline, while contributing to the ongoing research and development of Ethereum's decentralized infrastructure.