Page 740 - Cloud computing: From paradigm to operation

XaaS 3

1 Scope
This Recommendation focuses mainly on the security requirements of software as a service (SaaS)
application environments based on the SaaS application maturity level. The target audiences of this
Recommendation are cloud service providers (CSPs) and cloud service partners (CSNs) such as application
developers.

2 References
None.

3 Definitions

3.1 Terms defined elsewhere
This Recommendation uses the following terms defined elsewhere:

3.1.1 cloud service [b-ITU-T Y.3500]: One or more capabilities offered via cloud computing invoked using
a defined interface.

3.1.2 cloud service category [b-ITU-T Y.3500]: Group of cloud services that possess some common set of
qualities.

3.1.3 cloud service customer [b-ITU-T Y.3500]: Party which is in a business relationship for the purpose of
using cloud services.

3.1.4 cloud service partner [b-ITU-T Y.3500]: Party which is engaged in support of, or auxiliary to, activities
of either the cloud service provider or the cloud service customer, or both.

3.1.5 cloud service provider [b-ITU-T Y.3500]: Party which makes cloud services available.
3.1.6 cloud service user [b-ITU-T Y.3500]: Natural person, or entity acting on their behalf, associated with
a cloud service customer that uses cloud services.
3.1.7 desktop as a service [b-ITU-T Y.3500]: The capabilities provided to the cloud service customer are
the ability to build, configure, manage, store, execute, and deliver users' desktop functions remotely.
3.1.8 infrastructure as a service (IaaS) [b-ITU-T Y.3500]: Cloud service category in which the cloud
capabilities type provided to the cloud service customer is an infrastructure capabilities type.
3.1.9 software as a service (SaaS) [b-ITU-T Y.3500]: Cloud service category in which the cloud capabilities
type provided to the cloud service customer is an application capabilities type.

3.2 Terms defined in this Recommendation
None.

4 Abbreviations and acronyms

This Recommendation uses the following abbreviations and acronyms:
ASP Application Service Provider
CaaS Communications as a Service

CRM Customer Relationship Management
CSC Cloud Service Customer
CSN Cloud Service Partner

CSP Cloud Service Provider
DaaS Desktop as a Service

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