INTRODUCTION TO CLOUD COMPUTING ggg UNDERSTANDING CLOUD COMPUTING UNDERSTANDING CLOUD COMPUTING DEFINITION CLOUD COMPUTING.
Post on 03-Jan-2016
<ul><li><p>INTRODUCTION TO CLOUD COMPUTINGgggCLOUD COMPUTING</p></li><li><p>understanding cloud computing</p><p>Traditional software with licensesSoftware as a servicesCLOUD COMPUTINGPay as you GoPer Monthly</p></li><li><p> understanding cloud computing</p></li><li><p>understanding cloud computingSAAS PAASVIRTUALIZATIONIAASUTILITY COMPUTING</p></li><li><p>DEFINITIONS:</p><p>"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</p><p>- Vaquero, L., L. Rodero-Merino, et al. (2008)</p></li><li><p>Cloud computing is simply a buzzword used to repackage grid computing and utility computing, both of which have existed for decades.</p></li><li><p>Evolution from Grid to Cloud Computing</p></li><li><p>Public Cloud: The services are delivered to the client via the Internet from a third party service provider.Example: Amazon</p></li><li><p>Private Cloud: These 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 </p></li><li><p>It is a combination of services provided by the Private and public cloud</p><p>Example: ERP in private cloud Sales & Email in public</p></li><li><p>IAAS (Infrastructure as a service)Offers capacity for rent, basically hosted data centers and ServersAn evolution of web site and server hosting services provided by VPSExamples:Verizon's CAAS (Computing as a service)AT&T (Hosting & Storage)IAAS </p></li><li><p>PAAS (Platform as a service)Platforms enable application developers to host their servicesExample:Googles App EngineAmazon E2CMicrosoft azurePAAS </p></li><li><p>SAAS Software as a serviceThe application itself is provided by service providerExamples:ENTERPRISE: SalesForce.com, WebEx, OfficeliveUSER MAIL: gmail, Hotmail, YahooUSER PICS: flickr, picasaSAAS </p></li><li><p>AmazonMicrosoft windows AzureSavvisGoogle App EngineVmware cloudRack space Go grid</p></li><li><p>Reduced Hardware equipment for end users Improved Performance Lower Hardware and Software Maintenance Instant Software Updates AccessibilityPay for what we use</p><p>Security Issues Internet connection Features may be limited Location of ServersSpeed</p></li></ul>
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