One of the easiest ways to get started but not always the best functionality when installed stand-alone. Installation is easy enough and equates to screwing in a light bulb (I’ll leave it up to you to insert a joke here). Most bulbs give you the ability to change the brightness and warmth of the light while many also give you access to thousands of colors. The downside is that any wall switch is no longer functional as the bulb always needs power to be controlled via the network. The second the dumb switch is flipped, the bulb loses power and you have to manually flip a switch to control it via automation again. This can be worked around by using both a smart switch/relay in conjunction with a bulb if your hub is sophisticated enough (think Home Assistant not purely Alexa). You can decouple the switch from the actual power and have the switch trigger automation to turn the bulb off and not the actual power source, giving you the ability to still control the color, warmth, and brightness via app.