The International Joint Conference on e-Business and Telecommunications (ICETE 2020) is a joint conference aimed at bringing together engineers, researchers and practitioners interested in communication and information technologies, including e-business, data communication networking, security and cryptography, optical communication systems, multimedia applications, signal processing, information systems and wireless networks. These are the main knowledge areas that define the six component conferences, namely: DCNET, ICE-B, OPTICS, SECRYPT, SIGMAP, and WINSYS, which together form the ICETE joint conference.