What does it take to build great multi-tenant apps on the cloud? Carl and Richard talk to Joe Audette about his set of open source tools called cloudscribe to make multi-tenant apps easier to implement. The conversation starts out with managing IdentityServer, the great open source library for handling single-sign-on across multiple applications. Cloudscribe helps you manage the sites, users, roles and claims for IdentityServer. But there's more to multi-tenancy than just authentication and authorization, and Joe dives into the other elements of the suite to get your multi-tenant app running right!