This book LNICST 617 constitutes the refereed proceedings of the 12th EAI International Conference on Cloud Computing, CloudComp 2024, held in Luton, UK, during September 9&10, 2024. The 16 full papers were carefully reviewed and selected from 42 submissions. The proceedings focus on topics such as The Cloud-Edging Computing Wireless Networks; Network Security Emerging Applications /The Cloud-Edging Integration Applications