The chapter discusses regulatory procedures concerning Big Tech firms entering finance, acknowledging their diverse nature and global reach. Regulatory frameworks focus on entity-specific or activity-specific regulations due to the challenges posed by these firms’ financial resources and expansive operations. Supervisory bodies encounter difficulties in assigning responsibilities in this rapidly evolving landscape. Regulators prioritize flexibility to accommodate the unique risks and complexities of Big Tech involvement in finance. Various global authorities propose strategies to achieve effective regulation in this evolving field.