Hello friends,

how to do optimization for Voice Search..?

Keyword Research for Voice Search. ...
Site Structure & Content Development. ...
Structured Data Optimization. ...
Consider Creating Google Actions or Alexa Skills. ...
Mobile Friendly Is Voice Friendly. ...
Be Ready for Future Developments.

Optimize Your Business Listings. It's essential to keep your business listings clean and your name, address, and phone (NAP) data consistent. ...
Speed Up Your Website. ...
Your New Content Strategy: Focus on Questions. ...
Your New Content Strategy: Provide Answers. ...
Test It.

To optimize voice search which is the need of today's world you have to add a few of the terms like
Get listed online
Reduce page loading time.
Use Long-Tail SEO
Write more local content.
Use structured data markup.