The 2nd International Conference on Cloud, Big Data and IoT (CBIoT 2021) will be held June 26-27, 2021 in Sydney, Australia. The conference aims to facilitate the exchange of innovative ideas and research on cloud computing, big data, and IoT. Authors are invited to submit papers by December 19, 2020 on topics related to cloud platforms, big data techniques and applications, and IoT security and services. Selected papers will be published in the conference proceedings and considered for publication in related journals.