There are a number of ways to forward website visitors from one domain/website to another. The so-called URL redirection is frequently preferred. In contrast to parking a domain name, a URL redirection can be done only if the domain in question is hosted. What this means in simple terms is that you can still open any content if you have a direct link to it and you may set up e-mail addresses or subdomains and use them. Such a feature has many practical uses - if you decide to switch your domain, you can redirect the visitors, but the e-mails with the old one will still be active in the event that you are making contact with clients or partners. When you have 2 identical websites and you want to rebuild one of them, you may forward the visitors to the other site to prevent losing potential clients, while you will still be able to access the administrator area for the first site and work on it.