4. The three service models
Three service models can be offered on the Cloud (figure 1 ):
Software as a Service (SaaS) ;
Platform as a Service (PaaS) ;
Infrastructure as a Service (IaaS).
These three service models must be deployed on infrastructures that possess the five essential characteristics listed above to be considered Cloud Computing.
4.1 Software as a Service (SaaS)
This service model is characterized by the use of a shared application running on a Cloud infrastructure. The user accesses the application over the network via various types...
The Ultimate Scientific and Technical Reference
This article is included in
Software technologies and System architectures
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
The three service models
The four deployment models
Websites
NIST National Standard Institute http://www.nist.gov/itl/cloud/index.cfm
Cloud computing: on the air or down to earth http://www.slideshare.net/RevistaSG/cloud-computing-on-the-air-or-down-to-earth-beneficios-para-la-empresa
...
The Ultimate Scientific and Technical Reference
