The 5G Core Network (5G-CN) is the "brain" of the mobile network, running on cloud-native software. It handles authentication, data routing, security, and session management. This foundational backbone of the 5G system, relies on Service-Based Architecture (SBA). Where the SBA architecture elements are modular, reusable, cloud-native "Network Functions" (NFs), that communicate via APIs. It separates the control plane (decisions and signaling) from the user plane (data traffic handling), allowing for better resource routing and latency reduction