The advent of quantum computing poses a significant threat to classical cryptographic systems, necessitating the development of quantum-resistant solutions. Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD) have emerged as complementary approaches to achieving quantum-safe communications. This paper explores the integration of PQC and QKD technologies, emphasising their potential applications, practical implementation frameworks, and the challenges associated with their deployment. We have also analysed key use cases that are compatible with our existing network equipment, such as the Centauris encryptors, Juniper devices, and Cisco routers. Through an examination of the use cases and experimental findings, this work provides valuable insights into building scalable, robust, and quantum-resistant infrastructures for long-term data security.