The term PART OF SRO is a four-letter acronym that stands for 'Security, Regulatory, and Operations.' It is used to describe the three main components of a Security, Regulatory, and Operations (SRO) organization. The Security component is responsible for protecting the organization from external threats, while the Regulatory component ensures compliance with applicable laws and regulations. The Operations component is responsible for the day-to-day operations of the organization. Together, these three components form the foundation of an effective SRO organization.