It is definitely scalable. Though, we don't have a large user base who will be using the solution. Right now, we have this deployed at one customer location.

You can deploy it across various data centers and manage them all from one data center using a central administrator's interface, where the changes will reflect across all of the data centers.

It is a scalable platform. I rate its scalability a ten out of ten. We did POCs for 30,000 users last month.

Red Hat SSO is highly scalable. It's easy to increase the capacity using the OpenShift portal.

The solution is scalable.