Which is better for SEO? WWW vs. non-WWW

There are lots of arguments about whether it's better to have a WWW or non-WWW domain.
Using WWW can point you back to your site - it's a simpler URL to remember. It also suggests that you're trying to rank for that particular keyword. Using non-WWW can sometimes be more outside the box, but is easier for marketers without large marketing budgets to catch on.
Ultimately, the choice of having WWW or non-WWW domain is up to you, but both have its pros and cons. Whatever the decision is, make sure that your content marketing strategy is sound and structured accordingly.

Discover which domain extension is better for your SEO and generate high-quality and high-traffic pages effortlessly in minutes. 

Check this link for more information:
https://www.searchenginejournal.com/www-vs-non-www-seo/272043/