Google's John Mueller on Ranking for Featured Snippets - Search Engine Journal

Someone asked John Mueller in a Webmaster Hangout about Schema structured data and ranking for featured snippets. Structured Data is useful for communicating a deep amount of precise data. John Mueller answered the question by describing what it takes to make it easier for Google to use your page for featured snippets. The question asked was about the use of structured data for ranking in featured snippets. It was also about showing up for voice search via the Google Assistant.