Although this type of tangible hub still exists ( Samsung SmartThings), it's becoming more common to see virtual hubs that link accounts of different Wi-Fi devices over the internet (Alexa, Google Assistant, and IFTTT).
A smart hub is traditionally a device which controls other devices through protocols like Z-Wave and Zigbee. Although this type of tangible hub still exists ( Samsung SmartThings), it's becoming more common to see virtual hubs that link accounts of different Wi-Fi devices over the internet (Alexa, Google Assistant, and IFTTT).