One of the most popular type of Smart Home Devices is a smart speaker.
What makes the speaker smart is a built-in personal digital assistant.
The brain of a personal digital assistant is in the cloud, a term used for a collection of computing devices or servers, that serve information to you on demand.
Personal Digital Assistants
If you have a Smart phone you actually already have a personal digital assistant.
Google Assistant (Android phone) or Siri (iPhone) are the personal digital assistants built into your phone.
Alexa, Google Assistant and Siri
The most popular smart speakers and their built-in digital assistants are Amazon Echo with Alexa, Google Home with Google Assistant and Apple HomePod with Siri.
Facebook came out with its’ own smart speaker with a screen called the Portal. The Portal has an intelligent camera that follows you around as you move about the room during a video chat.