Nugroho, E.C. 2025. A Horizontally Scalable WebSocket Architecture for Cost-Effective Online Examination Proctoring System on AWS Cloud Infrastructure. Engineering, MAthematics and Computer Science Journal (EMACS). 7, 1 (Jan. 2025), 109–120. DOI:https://doi.org/10.21512/emacsjournal.v7i1.12770.