Cloud Computing

Question 1

Cloud Computing Characteristics

Answer 1

• Rapid elasticity
  
  • Scale up & scale down as needed
  • Seamless to everyone
• On demand self-service
  
  • Adding software , networks , servers , storage is a challenge outside the cloud
  • The cloud enables resource provisioning

Question 2

Cloud Computing Characteristics

Answer 2

• Resource pooling
  
  • All of the computing power in one place
  • One large resource instead of many small resources
• Measured service
  
  • Cost & utilization are very closely tracked
  • Resource planning & granular chargebacks

Question 3

Software as a Service

SaaS

Answer 3

• On-demand software
  
  • No local installation
  • Why manage your own email distribution or payroll
• Central Management of Data & application
• Google mail

Question 4

Infrastructure as a Service

IaaS

Answer 4

-Sometimes called hardware as a service (HaaS)
(Outsource your equipment

• You’re still responsible management & security
• Data is “out there” but more within your control
• Web server providers

Question 5

Platform as a Service

PaaS

Answer 5

• No server , no software , no maintenance team , no HVAC
  
  • Someone else handle the platform , you handle the product
• You don’t have direct control of the data , people or infrastructure
  
  • Trained security professional

-Salesforce.com

Question 6

Cloud Deployment Models

Answer 6

• Private
  
  • Your own virtualization local data center
• Public
  
  • Available to everyone over the internet
• Hybrid
  
  • Mix of private & public
• Community
  
  • Several organization share same resources