Parent Site Url: www.site1.com
Sub Domain Url: www.abc.site1.com
We have the requirement like create the sub domain(abc.site1.com) in separate instance and use the login & registration functionality from parent site(site1.com),can any one suggest the best approach in sitecore.
Note that, subdomain website doesn't have the login & registration forms, but have the these two buttons, once user clicks the login button form the sub domain, it should redirect to parent website, after successful login it should redirect to current website(sub domain).
Thanks in advance.