Cloud Computing

Cloud ComputingIntroduction to Cloud Computing

Fasih Ahmad Fakhri

Haldia Institute of TechnologyDepartment of Information Technology

Seminar on Assigned Topic at 7th Semester, 2011

Fasih Ahmad Fakhri (HIT Haldia) Cloud Computing November, 2011 1 / 38

Outline1 Introduction2 Evolution

Hardware EvolutionInternet Software EvolutionServer Virtualization

3 Key Characteristics4 Layers of Architechture5 Deployment Models6 Grid to Cloud7 Web Services

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8 Security9 Standards10 Summary





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8 Security9 Standards

10 SummaryFasih Ahmad Fakhri (HIT Haldia) Cloud Computing November, 2011 2 / 38




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Introduction to Cloud Computing

"Cloud computing is a buzzword..."

What is Cloud?The term cloud has been used historically as a metaphor for theInternet.

What is Cloud Computing?Cloud computing describes a new supplement, consumption anddelivery model for IT services based on Internet, and it typicallyinvolves the provision of dynamically scalable and often virtualizedresources as a service over the Internet.













VirtualizationVirtualization is a term that refers to the abstraction of computerresources.

Virtual machineVirtual machine (VM), a software implementation of a machine(computer) that executes programs like a real machine.





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The Evolution of Cloud Computing

Hardware EvolutionDifferent generations of computer.

Internet Software EvolutionThe Internet is named after the Internet Protocol, the standardcommunications protocol used by every computer on the Internet.

Server VirtualizationVirtualization is a method of running multiple independent virtualoperating systems on a single physical computer.





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Hardware Evolution

Hardware EvolutionFirst Generation ComputersSecond Generation ComputersThird Generation ComputersFourth Generation ComputersFifth Generation of Computing (after Mainframe, PersonalComputer, Client-Server Computing, and Web)





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Internet Software Evolution

Internet Software EvolutionEstablishing a Common Protocol for the InternetEvolution of Ipv6Finding a Common Method to Communicate Using the InternetProtocolBuilding a Common Interface to the InternetThe Appearance of Cloud Formations From One Computer to aGrid of Many





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Server Virtualization

Server VirtualizationParallel ProcessingVector ProcessingSymmetric Multiprocessing SystemsMassively Parallel Processing Systems





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The Key Characteristics of Cloud Computing

On demand self ServiceRapid elasticityPay per useReliabilityScalabilityMultitenancyPerformanceSecurityMaintenance





























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Layers of Cloud Computing Architechture

Client: Computer hardware or software that relies on cloudcomputing for application delivery.Application: Software as a ServicePlatform: Platform as a ServiceInfrastructure: Infrastructure as a ServiceServer: Computer hardware or software products that arespecifically designed for the delivery of cloud services, includingmulti-core processors, cloud-specific operating systems andcombined offerings.

















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Deployment Models of Cloud Computing

Public CloudThe services are delivered to the client via the Internet from a thirdparty service provider.Vendors: Amazon, Google, Microsoft, Salesforce etc.Infrastructure: Amazon, Rackspace, Gogrid, Joyent,Terramark etc.

Private CloudThese services are managed and provided within the organization.Vendors: IBM, Vmware, HP, Oracle (Data Centers) etc.Infrastructure: Eucalyptus, 3Tera, IBM, Vmware etc.


Deployment Models of Cloud Computing

Public CloudThe services are delivered to the client via the Internet from a thirdparty service provider.Vendors: Amazon, Google, Microsoft, Salesforce etc.Infrastructure: Amazon, Rackspace, Gogrid, Joyent,Terramark etc.

Private CloudThese services are managed and provided within the organization.Vendors: IBM, Vmware, HP, Oracle (Data Centers) etc.Infrastructure: Eucalyptus, 3Tera, IBM, Vmware etc.


Deployment Models of Cloud Computing Contd...

Community CloudCommunity cloud shares infrastructure between several organizationsfrom a specific community whether managed internally or by athird-party and hosted internally or externally.

Hybrid CloudThere is a combination of services provided from public and privateClouds.Example: ERP in Private cloud and Sales and Email on public


Deployment Models of Cloud Computing Contd...

Community CloudCommunity cloud shares infrastructure between several organizationsfrom a specific community whether managed internally or by athird-party and hosted internally or externally.

Hybrid CloudThere is a combination of services provided from public and privateClouds.Example: ERP in Private cloud and Sales and Email on public





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Grid Computing to Cloud Computing





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Web Services Delivered from the Cloud

XaaS/EaaSEverything as a service (EaaS, XaaS,*aaS) is a concept of being ableto call up re-usable, fine grained software components across anetwork.It is a subset of cloud computing. The most common andsuccessful example is software as a service (SaaS), but the as aservice moniker has been associated with many other functionsincluding communication, infrastructure and platforms, most of whichare core components of cloud computing.


Web Services Delivered from the Cloud Contd..

Software-as-a-Service (SaaS)Infrastructure-as-a-Service (IaaS)Platform-as-a-Service (PaaS)Other Services:

Communication-as-a-Service (CaaS)Data-as-a-Service (DaaS)Network-as-a-Service (NaaS)

























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SaaS

SaaS: Software as a serviceThe major service given as part of Cloud Computing services.The first service.Most Known and used.

The application itself is provided by the service provider.Example:

Enterprise: SalesForce.Com, Webex, OfficeLiveUser Mail: Gmail, HotmailUser Pics: Flickr, Picasa


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IaaS

IaaS: Infrastructure as a serviceService providers offers capacity for rent, basically hosted DataCenters ServersAn evolution of web site and server hosting services whichprovided servers and VPS

Examples:Amazon Web ServicesMain Services

Amazon EC2Amazon S3Amazon SQSAmazon SimpleDB

Rackspace


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Rackspace





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PaaS

PaaS: Platform as a ServicePlatform enables application developers to host their services.

Examples:Googles AppEngine

Python ApplicationCampus Buzz: http://hitbuzz.co.cc

Window AzureLive Services.NET ServicesSQL ServicesSharePoint ServicesDynamic CRM Services

CloudBeesOpenStackSalesForce


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Security Risks and Challanges

Third party dependenceData ownershipService guaranteesSecuring virtual machinesMassive outagesEncryption needs and StandardsStoring sensitive and personal information in cloudsContingency planning / disaster recovery for clouds





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Standardization Landscape

Open Cloud Consortium (OCC)Distributed Management Task Force (DMTF)Cloud Computing Interoperability Forum (CCIF)Object Management Group (OMG)Cloud Security Alliance (CSA)Open Grid Forum (OGF)OASISETSI





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Summary

Cloud Computing evolved from several technologies:SaaS service originating from SMBGrid and Virtualization originating from enterprise D.C.Hosting and Server Virtualization Technologies from ISPs


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Thank You
