Basic Cloud Concepts

Question 1

Software as a service (SaaS) - Basic Cloud Concepts

Answer 1

• On-demand software - No local installation
• Central management of data and applications
• Google Mail

Question 2

Infrastructure as a service (IaaS) - Basic Cloud Concepts

Answer 2

• Sometimes called Hardware as a Service (HaaS)
• You’re still responsible for the management and security
• Your data is out there, but more within your control
• Web server providers

Question 3

Platform as a service (PaaS) - Basic Cloud Concepts

Answer 3

• No servers, no software, no maintenance team, no HVAC
• Someone else handles the platform, you handle the product
• You don’t have direct control of data, people, or infrastructure
• Salesforce.com

Question 4

Cloud deployment models - Basic Cloud Concepts

Answer 4

• Private - Your own virtualized local data center
• Public - Available to everyone over the Internet
• Hybrid - A mix of public and private
• Community - Several organizations

Question 5

Cloud computing characteristics - Basic Cloud Concepts

Answer 5

• Rapid elasticity - Scale up and scale down as needed • Seamless to everyone
• On-demand self-service
• The cloud enables instant resource provisioning
• Resource pooling - All of the computing power in one place
  
  • One large resource instead of many small resources
• Measured service
  
  • Costs and utiliization are closely tracked