Internet of Things and Cloud Convergence for eHealth Systems: Concepts, Opportunities, and Challenges.

Healthcare and technology have a long history of interaction but eHealth adoption has been delayed due to a lack of infrastructure, capacity, and political will. It is called a health information technology system (HITS) or smart health system (SHS) when healthcare adopts health technology. Customers should expect improved service in terms of efficiency and cost after the system's modifications have been implemented. Exclusively after the COVID-19 pandemic, it was the test case of eHealth system worldwide, but the eHealth system is in its initial stage and facing different kinds of issues. Technology such as cloud computing and IoT enables HITS services to be delivered via the internet securely and scalable. Pay-as-you-go is the basis for this type of eHealth model, which various healthcare industries use to meet present and future demand by utilizing various frameworks. Cloud computing and the internet of things (IoT) are key components of an eHealth system described in this review paper. We also discuss the various parameters that make up this system's structure. After summarizing several research works based on IoT and cloud computing in eHealth, we describe challenges that still limit the efficiency and indicate future prospects for tackling these problems to further increase the development of eHealth systems in the next few years. [ABSTRACT FROM AUTHOR]