I'm new to this forum and seeking some help/direction. We are establishing a new identical copy of our existing customer site/portal. Some customers will be moved to this the new site and each site will be operated by two separate entities.
In order to make the transition period smooth, we are considering to have a temporary landing page on the existing site. When customer connects, the temporary landing page is shown in the browser. Page provides the option to customer to choose the new site to connect or continue (and customer gets to login page).
Is this technically possible (i'm not a technical person) and what needs to be done?