You can use a single Hue Filament bulb or connect multiple bulbs. Or control Hue Filament through the Philips Hue Bluetooth app or compatible voice device, or pair it with the Philips Hue Bridge based on Zigbee technology for maximum control and to enjoy additional smart features.
The Bridge, in fact, provides access to the entire Philips Hue ecosystem, including the control of lights inside and outside the home, as well as compatibility with third-party apps.