gistfile1.txt

multi-region cloud​
customer can address cloud resources across multiple regions. customer has a single set of api endpoint and management interface used to manage cloud resources across all regions.the_cloud
--------------
     |-- hong kong region
     |-- london region
     |-- seattle regionDashboard
1a. User logs into Horizon Dashboard
2a. User sees resources presented in subsets (regions)
3a. User can manage and deploy resources across different regionsCLI/API
1b. User authenticates via CLI/API
2b. User can directly manage and deploy resources across different regions.

​federated keystone​
customer can authenticate to multiple trusted clouds with a single set of credentials. customer has a way to securely use existing credentials to access cloud resources such as instances and volumes across multiple endpoints provided in multiple authorized clouds using a single set of credentials, without having to provision additional identities or log in multiple times. --------------
|-- hong kong cloud
|-- london cloud
|-- seattle cloudDashboard
1a. User can login to Horizon of cloud-A
2a. User can directly manage and deploy resources within cloud-A
3a. With the same credentials, user can login to Horizon of cloud-B
3b. User can directly manage and deploy resources within cloud-BCLI/API
1a. User can authenticate via CLI/API to cloud-A
2a. User can directly manage and deploy resources within cloud-A
3a. With the same credentials, user can authenticate via CLI/API to cloud-B
3b. User can directly manage and deploy resources within cloud-B