Allow users to communicate with and control connected accessories in their home using the app. With the HomeKit framework, you can provide a way to configure accessories and create actions to control them. Users can even group actions together and trigger them using Siri.
Amazon Alexa is a virtual assistant developed by Amazon, first used in the Amazon Echo and the Amazon Echo Dot smart speakers developed by Amazon.
Google Home speakers enable users to speak voice commands to interact with services through Google's intelligent personal assistant called Google Assistant. A large number of services, both in-house and third-party, are integrated, allowing users to listen to music, control playback of videos or photos, or receive news updates entirely by voice.