How voice search is affect the SEO?

I want to know that how voice search is impacts on SEO rankings?

Basically you should have a "brand name" for people to look for you ( if you have for example an ecomerce site, the person gonna say " your brand name" for it to pop up on search results. No wonder why the big brands spending hella cash on ads and they don't care about the "ROI" all they care about is people getting that brand inside their brains.

Yes,Voice search is getting popular and there is a great chance that google will roll out a major voice Alogarithm update in 2019.

As we all know that voice search drastically improve user experience. Mostly by using voice searches users can find the best information for their search query as quickly as possible. User experience is, ultimately, at the forefront of search engine optimization.
Thanks