Note: 87% of internet users are on mobile phones and 40% of transactions occur on mobile. Google moved to mobile-first indexing on the 1st of July 2019 to improve the mobile search experience.
Think beyond responsive designs to rich snippets.
If you’ve optimized for voice search, you’ve also optimized for mobile. Besides incorporating long-tail keywords for on-page SEO, modify the content structure and representation for technical SEO.