@jan_joris @WesleyCabus @ddoomen @Netlify @NetlifyCMS @Cloudflare I see. (although that link 404s for me)
I've seen some use it for https, although you get free with a couple of clicks on Netlify thanks to @letsencrypt.
Meanwhile, Netlify now has more DNS tools built in so you can manage MX records and subdomains. https://www.netlify.com/blog/2017/12/19/an-easier-way-to-manage-domains-and-dns-on-netlify/