Smart Home WiFi dimmers and WiFi wall switches let users automate the home, office or business using the existing WiFi network with no smart hub required. Plus most of them also integrate with voice assistants like Alexa and Google Home. Some also work with Siri and HomeKit.
Smart Home WiFi switches use a free cloud service and phone app for iOS or Android for control and programming while still allowing for local control at the switch just like any other electronic switch.
Some models also allow for integration with other smart home hubs or systems through integration services like IFTTT.