StackOverflow2013

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<blockquote> Meaning For dummies: </blockquote> IAAS (Infrastructure As A Service) : <ul> <li>The base layer </li> <li>Deals with Virtual Machines, Storage (Hard Disks), Servers, Network, Load Balancers etc</li> </ul> PAAS (Platform As A Service) : <ul> <li>A layer on top of IAAS</li> <li>Runtimes (like java runtimes), Databases (like mySql, Oracle), Web Servers (tomcat etc)</li> </ul> SAAS (Software As A Service) : <ul> <li>A layer on top on PAAS </li> <li>Applications like email (Gmail, Yahoo mail etc), Social Networking sites (Facebook etc)</li> </ul> To quickly relate consider the below Google's offerings: IAAS : Google Compute Engine (One can develop programs to be run on high performing google's computing infrastructure) PAAS : Google App Engine (One can develop applications and let them execute on top of Google app engine which take care of the execution) SAAS : Gmail, Google+ etc (One can use email services and extend email/google+ based applications to form newer applications) <blockquote> Popularity </blockquote> Company Wise Popularity Cloud computing is dominated by <ol> <li>Amazon Web Services (AWS), </li> <li>Google Compute Engine, Google App Engine</li> <li>Microsoft Azure</li> <li>There are many small and medium scale cloud operators that include IBM, Oracle etc.</li> </ol> Most of the popularity around these services owe to the reputation of the company and the amount of investments being made by these companies around the cloud space. Type of Service Wise Popularity <ol> <li>PAAS (Platform as a Service) is more popular among developers as they can put all their concentration on developing their apps and leave the rest of management and execution to the service provider. Many service providers also offer the flexibility to increase/decrease the CPU power depending upon the traffic loads giving developers cost effective and easy & effortless management.</li> <li>SAAS (Software as a service) is more popular among with consumers, who bother about using the application such as email, social networking etc</li> <li>IAAS (Infrastructure as a service) is more popular among users into research and high computing areas.</li> </ol>
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1. POWhat is SaaS, PaaS and IaaS? With examples
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1. UStakrishna
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1. UStakrishna
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1. COSalesForce and ConstantConnect are great examples of SAAS.
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 USDurai Amuthan.H

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