Book Image

IoT and Edge Computing for Architects - Second Edition

By : Perry Lea
Book Image

IoT and Edge Computing for Architects - Second Edition

By: Perry Lea

Overview of this book

Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. An architectural guide is needed if you want to traverse the spectrum of technologies needed to build a successful IoT system, whether that's a single device or millions of IoT devices. IoT and Edge Computing for Architects, Second Edition encompasses the entire spectrum of IoT solutions, from IoT sensors to the cloud. It examines modern sensor systems, focusing on their power and functionality. It also looks at communication theory, paying close attention to near-range PAN, including the new Bluetooth® 5.0 specification and mesh networks. Then, the book explores IP-based communication in LAN and WAN, including 802.11ah, 5G LTE cellular, Sigfox, and LoRaWAN. It also explains edge computing, routing and gateways, and their role in fog computing, as well as the messaging protocols of MQTT 5.0 and CoAP. With the data now in internet form, you'll get an understanding of cloud and fog architectures, including the OpenFog standards. The book wraps up the analytics portion with the application of statistical analysis, complex event processing, and deep learning models. The book then concludes by providing a holistic view of IoT security, cryptography, and shell security in addition to software-defined perimeters and blockchains.
Table of Contents (17 chapters)
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A natural question is, why are there any protocols outside of HTTP to transport data across the WAN? HTTP has provided significant services and abilities for the Internet for over 20 years yet was designed and architected for general purpose computing in client/server models.

IoT devices can be very constrained, remote, and bandwidth limited. Therefore, more efficient, secure, and scalable protocols are necessary to manage a plethora of devices in various network topologies such as mesh networks.

That said, HTTP is used and has a purpose in IoT and edge systems. While HTTP is not efficient across a network, HTTP2 and HTTP3 protocols are relatively efficient. Additionally, security through TLS is natural and common in HTTP sessions. Finally, HTTP is everywhere and routinely used in an assortment of communication and RESTful APIs.

In transporting data to the Internet, designs are relegated to the TCP/IP foundation layers. TCP and UDP protocols are...