Which one is the better for redirect?

Hello friends my website URL is domain.in it was not worked before with www url and now its occasionally showing with www url I had done work with www on my website from the past years so what is better to redirect domain.in to www. Or www to domain.in. My all back links are on domain.in.

It doesn’t really matter which one you pick, as long as you have your redirects set up properly, and are consistent throughout the site. I generally go for non-www, but there are arguments both ways – as I said, it doesn’t make a huge difference either way.

Redirection is necessary for your domain both for SERP and also to get rid of content duplication issue.