FAQ - Realms 
Can realms be organized in a hierarchy (realm in a realm)? 
There is no realm hierarchy as they all stand at the same level with a strong isolation. If hierarchy is a requirement then leverage "groups" instead.
Redirection to a specific Keycloak realm 
When browsing a Cloud-IAM Keycloak's deployment (e.g. https://DEPLOYMENT_NAME.cloud-iam.com/ ) at the root path / the user is redirected to the admin console of the master realm by default.
Cloud-IAM customer's might have on of their requirement:
- Customize the default 
/redirect behavior - Redirect the user to a specific realm's depending on some requirements
 - Setup a static page instead of redirecting the user to the master realm's admin console
 
These kind of features are out of Cloud-IAM scope since they depends a lot on the customer's use-case but there are multiple way to handle this:
- setup a reverse-proxy in front of Keycloak's deployment to manage this kind of redirects
 - put special logic on the application side before redirecting to the right URL (realm choice included)