Amazon Lex vs Dialogflow | What are the differences?
AlexaスキルをGoogle Home対応アプリに移植した話 - Qiita
Dialogflowでちょっとしたチャットボットを作ろう - WonderPlanet Developers' Blog
Chapter 12 : Building for actions on Google with the Actions SDK - Voice Applications for Alexa and Google Assistant
Voice User Interface Projects: Build voice-enabled applications using Dialogflow for Google Home and Alexa Skills Kit for Amazon Echo: Lee, Henry: 9781788473354: Amazon.com: Books