The book features original papers from the 4th International Conference on Smart IoT Systems: Innovations in Computing (SSIC 2023), organized by Manipal University, Jaipur, India during 26 – 27 October 2023. It discusses scientific works related to data engineering in context of computational collective intelligence consisted of interaction between smart devices for smart environments and interactions. Thanks to the high-quality content and the broad range of the topics covered, the book appeals to researchers pursuing advanced studies.