Amazon Alexa

Amazon Alexa
  • is an intelligent digital assistant
  • can work as an IoT hub
  • provides a voice interface to an IoT system
  • is based on natural language processing, speech recognition, machine learning and artificial intelligence technologies

How Amazon Alexa works:
  • Local device receives "wake-up word"
  • Local device records speaker's voice
  • Local device sends recorded voice over the Internet to Amazon
  • Alexa Voice Services (AVS) in the Amazon cloud processes the recorded voice
  • Recorded voice is converted into commands
  • Commands are used to control IoT devices connected to the Internet
  • Other Amazon services can be used to create new commands
  • Much more than a simple voice-to-text service


Amazon Alexa can find applications in smart homes, smart enterprises, and much more.