Services Models
IaaS provide processing, storage, networks, and other fundamental computing resources.
PaaS Deploy onto the cloud infrastructure customer applications created using programming languages and tools supported by the provider
SaaS Use the provider's applications running on a cloud infrastructure .

Public Cloud Computing Benefits
  • Provide IT resources / applications on demand
  • Align costs with use dynamically with a Pay as you go model
  • Eliminate overprovisioning and offers Unlimited scale
  • Cut the total cost of ownership
  • Increase business agility
  • Reduce environmental footprint
Public Cloud Computing Challenges
  • Which vendors should I trust ?
  • How can I prevent lock-in ?
  • Is it secure ?
  • Where is the data?
  • How can I predict the Performance ?
  • Quality of service ?
  • Organizational challenges to get up to speed ?
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