VALCHEVA, Desislava; ANDREEV, Evgeni. COMPARISON BETWEEN TRADITIONAL IT INFRASTRUCTUREAND CLOUD SERVICE MODELS – TECHNOLOGICAL,ECONOMIC, AND OPERATIONAL ASPECTS. E-Journal VFU, [S. l.], n. 24, p. 790–798, 2025. Disponível em: https://ejournal.vfu.bg/index.php/vfu/article/view/251. Acesso em: 23 feb. 2026.