This document provides an introduction to cloud computing, including its components, architecture, types of clouds, and virtualization. It discusses how cloud computing provides scalable and on-demand computing resources through virtual machines. The key components of cloud computing are clients, services, and the cloud infrastructure, which includes compute, storage, and networking resources. There are three main types of cloud services: Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Virtualization allows for server consolidation and improved efficiency. Related works from Microsoft, IBM, and Cisco are also summarized.

1. “CLOUD COMPUTING” presented by anurika arora 2006eec50

2. ContentsIntroduction to Cloud ComputingHow is it any different?Components Cloud ArchitectureTypes of CloudsVirtualization Cloud CharacteristicsRelated works List of References

3. What are Clouds?Clouds are “Virtual Clusters”Clouds support access of(lease of) computer instancesInstances accept data and job descriptions (code) and return results that are data and status flagsThe datacenter with hardware and software is what we will call a Cloud.

5. What is Cloud Computing “A computing cloud is a set of network enable services providing scalable, QoS guaranteed, normally personalized, inexpensive computing infrastructures on demand, which could be accessed in a simple and pervasive way.”

7. ComponentsClient Mobile (Android, iPhone, Windows Mobile)Thin client (Cherry Pal, Zonbu, gOS-based systems)Thick client / Web browser (Apple Safari, Mozilla Firefox, Google Chrome, Opera, Microsoft Internet Explorer) ServiceIntegration (Amazon Simple Queue Service) Payments (Amazon Flexible Payments Service, Google Checkout, PayPal) Mapping (Google Maps, Yahoo! Maps, MapQuest)

8. ContinueSearch (Alexa, Google Custom Search, Yahoo! BOSS) Video Games (OnLive) Live chat (LivePerson) Software as serviceSoftware as a service (Google Apps, SAP and Salesforce) Software plus services (Microsoft Online Services)

9. continuePlatform as a serviceCode Based Web Application Frameworks Java Google Web Toolkit (Google App Engine) Python Django (Google App Engine) Ruby on Rails (Heroku) .NET (Azure Services Platform) Non-Code Based Web Application Framework WorkXpress Wolf Frameworks Cloud Hosting (Rackspace Cloud Sites) Proprietary (Force.com)

10. continueInfrastructure as a serviceFull virtualization (GoGrid, Skytap, iland) Compute (Amazon EC2, Rackspace Cloud Servers, Savvis) Platform (Force.com) Storage (Amazon S3, Nirvanix, Rackspace Cloud Files, Savvis)

11. ComputeStorageNetworkingContent DeliveryCloud ArchitectureSoftware -as-a-serviceGoogleApp EnginePlatform -as-a-serviceData IntensiveAmazon Hadoop, Public Data Sets, Simple DBInfrastructure-as-a-ServicePhysical infrastructureHardware ResourcesGCDS Akamai11

17. Virtualization technologyVirtual machine is a software implementation of a real machineFull virtualization Instead of 100 physical servers ,we can now have 100 virtual server images running on 1 physical server, this reduces the used infrastructurePlatform virtualizationApplication virtualization Virtual appliancesSignificance :Server consolidationVirtual memory

18. Parallelization and virtualization

19. Data-intensive processing

20. Virtual machine images can be easily updated and redeployed

21. If any physical server fails then the virtual machines that it was hosting are simply restarted on different physical server

22. Related works and resultsMicrosoft: Software plus ServicesIBM: Transformation through Customer ImplementationsCisco: Evolving Interoperability

23. MICROSOFT: SOFTWARE PLUS SERVICESWindows Azure Services Platform. The Azure platform is hosted in Microsoft data centers.It facilitates:Development of applicationsImproved Service managementImproved Service-hostingSeveral Microsoft SaaS applications already run on the Azure platform

24. IBM: Transformation through CustomerImplementations

25. CISCO: EVOLVING INTEROPERABILITYCisco adopted Web 2.0-based collaboration products. Interoperability across cloud infrastructures—that is, the intercloudIn place of stand alone clouds , enterprise clouds with enhanced security and full interoperability needs to be developed which remains a challenge

27. Commercial Cloud Formation