In the evolving landscape of modern networks, flexibility and agility have become paramount. Network Function Virtualization (NFV) and Software-Defined Networking (SDN) have revolutionized how network services are deployed and managed, enabling dynamic, programmable, and cost-effective infrastructures. One of the critical enablers within this framework is Network Function Chaining (NFC), which allows network operators to define and orchestrate ordered sequences of virtualized network functions (VNFs) to deliver complex services tailored to specific application needs.