The 2022 ICSID Rules and Regulations amendments mark the most extensive revision of the rules to date. The main objectives of the revision was to modernise, simplify and streamline the legal framework of ICSID proceedings. A team of renowned practitioners and rising stars in the field of International Arbitration have analysed these updated frameworks – i.e., the ICSID Arbitration Rules, the Conciliation Rules, the Institution Rules as well as the Administrative and Financial Regulations – provision by provision to offer practical and theoretical guidance for experienced lawyers, as well as beginners in the field alike.