Yagnesh22 You could use an SSO provider such as Jumpcloud jumpcloud DOT com
I've used the OST LDAP plugin to work with their LDAP services and all works fine, they do have other services you can use like SAML or RADIUS, however LDAP does fine and provides directory lookup for users, and handles the auth for admins.
forum moderator [ntozier]: remove the external link and made it human readable.