Cloud computing

1. Characteristics

1.1. On-demand self-service

2. Cloud clients

3. Service models

3.1. Infrastructure as a service (IaaS)

3.2. Platform as a service (PaaS)

3.3. Software as a service (SaaS)

4. Deployment models

4.1. Public cloud

4.2. Community cloud

4.3. Hybrid cloud

4.4. Private cloud

5. Production used in Hong Kong

5.1. printers

5.2. files store in emails

6. Architecture

6.1. The Intercloud

6.2. Cloud engineering

7. Definition