A wired Ethernet connection is ideal for any IoT device, if it's available. Ethernet provides easy setup and extreme reliability. The newest standards allow for a bandwidth of 400 Gbps, and its low latency is unrivaled. It is even possible to provide power over Ethernet in some cases, further simplifying deployment.

The downside to Ethernet connections is, of course, that a physical cable is required. Many offices already have Ethernet run to each room, and Ethernet-connected IoT devices work well there. In residential and industrial settings, however, running new wires can be tedious. Wireless connections are, therefore, often easier in those settings.

When available, Ethernet setup is easy. Oftentimes, a device only needs to be plugged in and it's ready to work.

Keep in mind that, with Ethernet, as with Wi-Fi, you're relying on internet access being available at your IoT device installation site. This internet access is generally much slower than the Ethernet connection you will have on the local network. As this internet access is provided by your customer, its quality can vary greatly.

What if Wi-Fi and Ethernet aren't available? What if your device needs to be mobile? In those cases, cellular internet access may be your best option.