Cloud Computing

1. Benefits

1.1. Backup and Recovery

1.2. Fewer Maintenance Issues

1.3. Lower IT Infrastructure

1.4. Improved Performance

1.5. Increase Data Safety

1.6. Increase Storage Capacity

2. Virtualization

2.1. Network Virtualization

2.2. Server Virtualization

2.3. Storage Virtualization

3. VS Grid Computing

3.1. Uses the Available Resource

3.2. Owned By a Multiple Parties in Multiple Locations

3.3. Decentralized Model

3.4. Provide Limited Services

3.5. Federates the Resources in Different Organizations

4. Types

4.1. Private Cloud

4.2. Public Cloud

4.3. Hybrid Cloud

4.4. Community Cloud

5. VS Utility Computing

5.1. Ability to Charge

5.2. Control of Location

5.3. Less Resource Demanding

5.4. Refers to Business Model

5.5. More Favorable

6. Services

6.1. Software as a Service (SaaS)

6.2. Platform as a Service (PaaS)

6.3. Infrastructure as a Service (LaaS)

7. Architecture

7.1. Back-end

7.2. Front-end

8. Security & Privacy

8.1. Confidentiality of Data

8.2. Keep the Data Encrypted at the cloud