ahmad hawar, R. M. Zeebaree S. The Evolution of Fog and Cloud Computing in Distributed Systems: A Review of Architectures, Challenges, and Parallel Processing Techniques. PGJSRT [Internet]. 2025Jul.1 [cited 2026Jan.25];4(2). Available from: https://pgjsrt.com/pgjsrt/index.php/qaj/article/view/218