Contreras-Masse, R. , Ochoa-Zezzatti, A. , Elizondo-Cortés, M., Torres , V. , García Jiménez, V. and Mejía, J. 2021. Editorial: From traditional Information Technology to Serverless. A novel approach to monitor mobile phones using concepts and principles of Industrial Internet of Things. International Journal of Combinatorial Optimization Problems and Informatics. 12, 2 (Apr. 2021), 1–6.