What is the cloud computing?
Alberto Molina Coballes, José Luis Rodríguez Rodríguez and José Domingo Muñoz Rodríguez
Cloud Computing in European schools. Project: 2017-1-ES01-KA202-038471
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Disclaimer
The European Commission support for the production of this
publication does not constitute an endorsement of the contents
which reflects the views only of the authors, and the Commission
cannot be held responsible for any use which may be made of the
information contained therein
Service Models
Business model not based on selling software licenses or
hardware, but provide different services with cloud features
- Software as a Service: SaaS
- Platform as a Service: PaaS
- Infrastructure as a Service: IaaS
Software as a Service
- Software application as a Service available in the cloud
- The user uses a web application instead of a locally installed
one
- All the web applications aren't SaaS, they must fulfill the
"essential characteristics"
- Every final user can use SaaS and it's already widely used
today
- Examples: Google Services, Microsoft 365, Dropbox, etc.
Platform as a Service
- Web development and deployment platform on the web
- Used by developers, teams or companies that don't know or
don't want to spent time configuring and maintaining production
environments in the cloud
- Examples: Heroku, Google App Engine, Windows Azure, Openshift,
CloudFoundry
- PaaS based on kubernetes are trendy
Infrastructure as a Service
- Infrastructure elements provided as a service on the
cloud
- Used mainly by sysadmins
- Examples: AWS, GCE, Azure, OpenStack
Deployment Models
- Private cloud
- Community cloud
- Public cloud
- Hybrid cloud