There are various ways to forward traffic from one domain/website to another. The so-called URL redirection is commonly preferred. In contrast to parking a domain address, a URL redirection is feasible only if the domain in question is hosted. What this means in simple terms is that you may still open any content in case you have a direct link to it and you may set up e mail addresses or subdomains and use them. This kind of function has numerous practical uses - if you want to switch your domain name, you can redirect the visitors, but the emails with the old one shall still be active if you are communicating with clients or partners. If you have 2 very similar websites and you would like to rebuild one of them, you could forward the visitors to the other site to prevent losing potential customers, while you'll still be able to access the administrator area for the first site and improve it.