Building community on your Joomla!3 website is a must nowadays. Outside of traditional comments, you can accomplish this by building a social network. Forums give site visitors a chance to connect and discuss, share ideas and collaborate; analyze and contribute.
Joomla is the perfect CMS for adding a forum. Often, all you need to do is install a extension, In fact, the phpBB platform has been around since 1994. Another popular forum platform is vBulletin, which has been around since 2000.
That’s not integration. Integration merges them together so they act as one. Once the two platforms are completely integrated, users will only have to sign in once.
I'd recommend the free extension called kunena is a best way to create forum/discussion solution for Joomla.
Download Kunena Free Below:
[social_locker style="flat" title="1 Click to Unlock Your Download Button" message="Use one of the buttons below to unlock the download button" timer="120" mobile="yes" url="http://goo.gl/mvgZok"]Download Kunena Forum/Discuss for Joomla 3