This document discusses cloud computing, including its history and key concepts. It defines cloud computing as on-demand services and solutions delivered over the internet on a pay-per-use basis. The document outlines the benefits of cloud computing like scalability, ubiquity, and cost savings. It also describes different deployment models like public and private clouds and virtualization approaches used in cloud infrastructure. Finally, it provides an overview of major cloud providers that offer cloud services.

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CLOUD COMPUTING
Stephen Samuel

2. ▸ What is cloud computing
▸ Why cloud computing
▸ Virtualization
▸ Deployment models
▸ Cloud providers

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SOME HISTORY
▸ JohnMcCarthy 1960’s
"COMPUTATION MAY SOMEDAY BE
ORGANIZED AS A PUBLIC UTILITY.”
TERM “CLOUD COMPUTING” WAS USED IN A 1997 LECTURE BYRAMNATH CHELLAPPA.

4. TEXT
IS IT A NEW TECHNOLOGY?

5. ▸ Services and Solutions delivered realtime over internet
▸ It enables real time development, deployment and delivery of broad range of
products , services and solutions
What is Cloud Computing?

6. ▸ On Demand Self Service
▸ Ubiquitous network Access: Anywhere, Any time ,Any Device
▸ Location independent Resource Pooling
▸ Rapid Elasticity
▸ Pay as you go
What is Cloud Computing?

7. ▸ Advancement in processors
▸ Virtualization technology
▸ Distributed Storage
▸ Automated Management
▸ Fast and Inexpensive Servers
Why Cloud Computing?

8. VIRTUALIZATION OVERVIEW

9. VIRTUALIZATION APPROACH

10. VIRTUALIZATION APPROACH
BARE METAL VIRTUALIZATION
▸ is running a virtual operating system on top of a hypervisor which is sitting
right on top of the hardware.
▸ Citrix XenServer and VMWare ESX Server

11. VIRTUALIZATION APPROACH
HOSTED OS VIRTUALIZATION
▸ is running a virtual operating system
▸ on top of virtual hardware
▸ on top of a host operating system
▸ Examples are VMWare GSX Server and Microsoft Virtual Server.

12. VIRTUALIZATION APPROACH
▸ faster and more efficient
▸ scalability
▸ enterprise features
▸ high data center availability.
▸ usually free software and can be run on
user workstations
▸ OS licenses
▸ it's slower
▸ enterprise features are limited.
BARE METAL HOSTED

13. DEPLOYMENT MODELS
PUBLIC CLOUD
▸ used by multiple tenants on a shared basis
▸ hosted and managed by cloud service
provider
▸ limited variety of offerings
▸ lower upfront costs
▸ simpler to manage
SaaS
PaaS
IaaS
Internet

14. DEPLOYMENT MODELS
PRIVATE CLOUD
▸ exclusively used by a single organization
▸ controlled and managed by in-house IT
▸ large number of applications
▸ lower total cost
▸ greater control over the security,
compliance, and quality of service
SaaS
PaaS
IaaS
Intranet

15. CLOUD PROVIDERS
▸ A cloud provider is a company that offers some component of cloud
computing – typically Infrastructure as a Service (IaaS), Software as a Service
(SaaS) or Platform as a Service (PaaS) – to other businesses or individuals.