what is the DISQUS ?

What I know about DISQUS is add-on tools to make site owners to power discussion, increase engagement, and earn revenue.

BUT in my case, I will use discussion function.

if you use beautiful-jekyll, after changing the option related to DISQUS, you can use Disqus.

code to run disqus is already made in beautiful-jekyll using ruby.

If you are thiking how they make it, click beautiful-jekyll site

first, you sign up DISQUS site

the image below shows you appearance after changing option.

Reference