A Brief Survey of the Main Internet-Based Approaches. An Outlook from the Internet of Things Perspective

The Internet of Things (IoT) is an approach that arose as an alternative to handle billions of digital devices, people and services of the real-world which are interconnected over Internet. In this paper, we present a comprehensive survey where main paradigms associated with IoT -Internet of Services (IoS), Internet of People (IoP), Internet of Content (IoC) and the emerging Internet of Agents (IoA)- are outlined. We analyze these paradigms in terms of their definition, scope, goals and their correlation with the IoT in order to identify the main challenges that will involve to the next generation of the IoT applying a process of agentification to achieve more autonomous, collaborative and intelligent IoT systems.