# Internet of Things and Its Applications: A Comprehensive Survey
## 6 Discussion  
With the expansion of the internet and exploring various ideas of bringing networks into the physical domain, the evolution of the IoT structure is rapidly increasing. It employs the extensive implementation of spatially distributed devices with embedded detection, sensing, and actuation abilities. IoT foresees a potential in which digital and physical entities can be connected, through suitable knowledge and communication tools, in order to facilitate an entirely new category of  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Reference** & **Focus Area** & **Application** & **Protocol** & **Device** \\ \hline
[144] & SDN allocation method and IoT/fog &
\begin{tabular}{c} Very low and predictable \\ latency applications \\ \end{tabular} & Openflow & Smart devices \\ \hline
[145] & Energy-efficient resource management & \
\begin{tabular}{c} • Industry 4.0 \\ \(\bullet\) \\ \(\bullet\) \\ \(\bullet\) \\ \(\bullet\) \\ \(\bullet\) \\ \end{tabular} &
\begin{tabular}{c} \\ Internet of energy \\ Big data streaming \\ Vehicular mobility \\ Smart city \\ \end{tabular} & TCP/IP & Smart devices \\ \hline
[146] & Resource-efficient edge computing &
\begin{tabular}{c} • Flying ad hoc networks \\ for precision agriculture \\ E-health \\ Smart homes \\ \end{tabular} & Cellular & Intelligent IoT device \\ \hline
[147] & Compressed sensing based on weakness for IoT applications &
\begin{tabular}{c} • IoT scenarios consisting \\ of local WSN \\ \end{tabular} & - & - \\ \hline
[148] & Energy-efficient saving rectifier circuits &
\begin{tabular}{c} • Energy harvesting \\ Biomedical applications \\ \end{tabular} & Bluetooth/ WLAN & - \\ \hline
[149] & Low complexity parity checking & Wireless sensor networks & - &
\begin{tabular}{c} • Wearable devices \\  
applications and services. The purpose of this study consisted of examining and evaluating the main factors associated with the use of IoT regarding exchange, including healthcare, environmental, commercial, industrial, smart city, and infrastructural applications. The IoT has opened up a world of opportunities in healthcare: When linked to the internet, ordinary health machines can collect important supplementary records, provide additional understanding on symptoms and indications, permit remote healthcare systems, and mostly give patients extra control over their survival and treatment. Similarly, the applications of IoT in environmental examining are extensive, such as environmental safety, severe weather prediction, water protection, compromised species safety, viable agriculture, and more.  
Moreover, IoT-enabled smart cities utilize examples that span numerous areas, from providing a better ecosystem and advancing traffic flow to improving people's safety and optimizing road lighting. As IoT technology advances, municipalities are becoming more and more linked in a struggle to increase the effectiveness of infrastructure systems, enhance consistency and responsiveness in disaster situations, manage budgets, and more. Additionally, commercial IoT targets our daily environment outside of the home (consumer IoT). There is a set of applications that can be deployed in places which people frequently visit, such as commercial office buildings, supermarkets, stores, hotels, healthcare facilities, and entertainment venues. The applications for these places vary from variable monitoring to environmental conditions, personal control scheduling, and building access, as well as connected lighting, asset tracking, and many more. Likewise, industrial IoT targets existing automated industrial systems looking for dramatic improvements in productivity and efficiency. The most common sectors are large-scale factories or manufacturing plants, but these are also known to have monitoring utilities and expensive assets. In short, it can be observed that by using IoT devices, industries can advance in terms of automation, software, and connectivity and deliver enormous productivity and efficiency benefits to their operations.