You can implement a support center as a standalone or you can use iframe.
By using an iframe, you can deliver your support center as an integral part of your website while leaving your site's functionality in place:
You can deliver your support center as a standalone, external page with a subdomain address. A standalone support center can't present your site's header and footer and doesn't include other site-specific functionality from your main page either, like user-secured login, cart management or site search.
The benefits of using a standalone support page: