Is it possible to have two separate servers share the same domain name? If so, how?

I have a website and email services hosted on a nginx server with the domain name site.co.mz, working perfectly.

But recently I'm developing a new website that should replace the one hosted on this nginx server. I've hosted this new website on Heroku because I'm developing this website using Jekyll and some gems which Heroku makes it easy to host and it's working perfectly too.

I want to know if is it possible to share the same domain name site.co.mz on these two different servers?