How to redirect www to non-www within domains?

DNS doesn’t do redirection. You have to configure it in your webserver.

I used an A record and that solved the issue. Thanks!

@sierracircle What Apache version is the advice for? What Linux distro is this for? I tried this and got this error on a CentOS 7 running Server version: Apache/2.4.6 (CentOS) and I got this error:

Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xe" for details.

First of all, aren’t we supposed to be editing our Apache Config Files located in /etc/httpd/sites-available? not sites-enabled? Secondly, is our example.com.conf supposed to look like this advice:

<VirtualHost *:80>

    ServerName www.example.com 
    ServerAlias example.com 
    DocumentRoot /var/www/example.com /public_html
    ErrorLog /var/www/example.com /error.log
    CustomLog /var/www/example.com /requests.log combined
</VirtualHost>
    <Directory /var/www/yourwebfolder>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride all
        Order allow,deny
        allow from all
            Require all granted
    </Directory>

This is my question. And lastly, isn’t yourwebfolder supposed to be called a document root? Or are they different? My last question is for Digital Ocean. Can we please get a qualified document that helps CentOS 7 customers make it so the same page with both www.example.com and example.com have good DNS but we want people who go to both pages only END UP on the example.com domain please? Thanks in advance.