Page 1461 - 5G Basics - Core Network Aspects

Signalling aspects 3

• Application migration: Ability to move applications from one discrete PaaS to another PaaS available
from the same or different cloud provider with minimal effort.
• Business continuity: Migrate or replicate applications among PaaS services to address outages,
security breaches, or other disruptions. This is intended to encompass both disaster recovery and
disaster avoidance.
Interoperability perspectives follow:
• Interconnectability: The parallel process in which two coexisting environments communicate and
interact.

• Portability: The serial process of moving a system from one cloud environment to another.

5.4 Application capabilities type interoperability testing
In portability and interoperability of application capabilities (SaaS) environments, business process
functionality offered through SaaS solutions can be initially connected, transferred, or interconnected. SaaS
interoperability allows organizations to create mash-ups from multiple SaaS and non-SaaS applications. This
is an issue that primarily concerns data exchange, which includes metadata, and interface compatibility.

6 Cloud computing interoperability testing between CSC and CSP
CSC is a party in a business relationship for the purpose of using cloud services. The interoperability between
CSC and CSP supports the CSC to interact with CSP according to a prescribed method and obtain predictable
results. Enabled by interworking between CSC and CSP, CSC can use the capabilities provided by CSP, such as
using the processing, network and storage capability. For example, CSC can use virtual machine provide by
the CSP.

CSC can also perform business administration tasks such as subscribing to cloud service and administering
use of cloud service through the interaction with CSP.

Based on the reference architecture described in [ITU-T Y.3502], the interworking involved in CSC-CSP
relationship and corresponding test objective can be identified as follows:
• Interworking between CSC and CSP's service integration component.
Test objective is to verify that CSP can provide connections to CSP's services for CSC.
• Interworking between CSC and CSP's authentication and identities management component
Test objective is to verify that CSP can provide capabilities relating to user identities and the
credentials required to authenticate users are provided when CSC access cloud services and related
administration and business capabilities.
• Interworking between CSC and CSP's authorization and security policy management component
Test objective is to verify that CSP can provide capabilities for the control and application of
authorization for CSC to access specific capabilities or data.
• Interworking between CSC and CSP's product catalogue component
Test objective is to verify that the CSP can provide capabilities for browsing available service list, and
capabilities for management of the content of catalogue.
• Interworking between CSC and CSP's account management CSC
Test objective is to verify that the CSP can provide capabilities for managing cloud service
relationships, including management of contracts, subscription to cloud service, entitlements,
service pricing and policies that apply to the treatment of CSC data.

• Interworking between CSC and CSP's subscription management component
Test objective is to verify that the CSP can handle subscriptions from CSC to particular cloud services,
aiming to record new or changed subscription information from the customer and ensure the
delivery of the subscribed service(s) to the customer.

1451