2. INTRODUCTION TO CLOUD COMPUTING ggg UNDERSTANDING CLOUD COMPUTING UNDERSTANDING CLOUD COMPUTING DEFINITION CLOUD COMPUTING

4. understanding cloud computing Traditional software with licenses Software as a services CLOUD COMPUTING Pay as you Go Per Monthly

5. understanding cloud computing

6. SAAS PAAS VIRTUALIZATI ON IAAS UTILITY COMPUTING

7. DEFINITIONS: " Clouds are a large pool of easily usable and accessible virtualized resources (such as hardware, development platforms and/or services). These resources can be dynamically reconfigured to adjust to a variable load (scale), allowing also for an optimum resource utilization. This pool of resources is typically exploited by a pay-per-use model in which guarantees are offered by the Infrastructure Provider by means of customized SLA“ - Vaquero, L., L. Rodero-Merino, et al. (2008)

8. Cloud computing is simply a buzzword used to repackage grid computing and utility computing, both of which have existed for decades. ”

9. Evolution from Grid to Cloud Computing

11. Public Cloud: The services are delivered to the client via the Internet from a third party service provider. Example: Amazon

12. Private Cloud: T hese services are managed and provided within the organization. There are less restriction on network bandwidth, fewer security exposures and other legal requirements compared to the public Cloud. Example: HP Data Centers

13. It is a combination of services provided by the Private and public cloud Example: – ERP in private cloud – Sales & Email in public

15. IAAS (Infrastructure as a service) Offers capacity for rent, basically hosted data centers and Servers An evolution of web site and server hosting services provided by VPS Examples: – Verizon's CAAS (Computing as a service) – AT&T (Hosting & Storage)IAAS

16. PAAS (Platform as a service) Platforms enable application developers to host their services Example: – Google’s App Engine – Amazon E2C – Microsoft azurePAAS

17. SAAS – Software as a service The application itself is provided by service provider Examples: – ENTERPRISE: SalesForce.com, WebEx, Officelive – USER MAIL: gmail, Hotmail, Yahoo – USER PICS: flickr, picasaSAAS

18. Amazon Microsoft windows Azure Savvis Google App Engine Vmware cloud Rack space Go grid

19. Reduced Hardware equipment for end users Improved Performance Lower Hardware and Software Maintenance Instant Software Updates Accessibility Pay for what we use Security Issues Internet connection Features may be limited Location of Servers Speed