Page 523 - Cloud computing: From paradigm to operation

Cloud Computing management 2

3.1.4 cloud service provider [b-ITU-T Y.3500]: Party which makes cloud services available.

3.1.5 Network as a Service (NaaS) [b-ITU-T Y.3500]: Cloud service category in which the capability
provided to the cloud service customer is transport connectivity and related network capabilities.
3.1.6 network function [ITU-T Y.3515]: A function of a network infrastructure whose external interfaces
and functional behaviour are well specified.
NOTE – Examples of network functions include network switches and network routers.
3.1.7 network service [ITU-T Y.3515]: A collection of network functions with a well specified behaviour.
NOTE – Examples of network services include content delivery networks (CDNs) and IP multimedia subsystem (IMS).
3.1.8 software-defined networking [b-ITU-T Y.3300]: A set of techniques that enables to directly
program, orchestrate, control and manage network resources, which facilitates the design, delivery and
operation of network services in a dynamic and scalable manner.

3.2 Terms defined in this Recommendation

This Recommendation defines the following terms:
3.2.1 NaaS service operational policy administration point (NPAP): An entity in the Network as a Service
(NaaS) service operational policy framework that administrates the policies.
3.2.2 NaaS service operational policy decision point (NPDP): An entity in the Network as a Service (NaaS)
service operational policy framework that makes authorization decisions and distributions of the policies.
3.2.3 NaaS service operational policy enforcement point (NPEP): An entity in the Network as a Service
(NaaS) service operational policy framework that implements the decisions of NPDP (3.2.2).
3.2.4 NaaS service operational policy information point (NPIP): An entity in the Network as a Service
(NaaS) service operational policy framework that stores the policies.

4 Abbreviations and acronyms
This Recommendation uses the following abbreviations and acronyms:

CI Continuous Integration
CD Continuous Delivery

CDN Content Delivery Network
CE Customer Edge
CSC Cloud Service Customer

CSP Cloud Service Provider
DevOps Development and Operations

ECA Event, Condition and Action
IMS IP Multimedia Subsystem
NaaS Network as a Service

NF Network Function
NPAP NaaS Service Operational Policy Administration Point

NPDP NaaS Service Operational Policy Decision Point
NPEP NaaS Service Operational Policy Enforcement Point

NPIP NaaS Service Operational Policy Information Point
NS Network Service

515