https://www.facebook.com/groups/aajug
https://twitter.com/aajugvoice
https://alexa-jp.slack.com
https://developer.amazon.com/en-US/alexa/alexa-live/release-roundup
https://developer.amazon.com/ja-JP/blogs/alexa/alexa-skills-kit/2021/07/more-than-50-features-to-build-ambient-experiences