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Cloud Computing and Its Service Models

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3 types of cloud computing service models

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Cloud Computing and Its Service Models

  1. 1.  CLOUD COMPUTING     &  ITS SERVICE MODELS
  2. 2. 3 TYPES OF CLOUD COMPUTING SERVICE PROVIDERS IAAS (INFRASTRUCTURE AS A SERVICE) PAAS (PLATFORM AS A SERVICE) SAAS (SOFTWARE AS A SERVICE) 1 2 3
  3. 3. INFRASTRUCTURE ASASERVICE (IAAS) IaaS is the lowest-level cloud service paradigm and arguably the most important. With IaaS, pre-configured hardware resources are provided to users through a virtual interface. It simply enables access to the infrastructure needed to power or support that software. IaaS can provide extra storage for corporate data backups, network bandwidth for a company website server
  4. 4. INFRASTRUCTURE AS A SERVICE (IAAS) Benefits: Issues: Full Control of the computing resources through Administrative Access to VMs. Flexible and Efficient renting of Computer Hardware. Portability, Interoperability with Legacy Applications. Compatibility with legacy security vulnerabilities Virtual machine sprawl  Data erase practices Robustness of vm-level isolation
  5. 5. SOFTWAREASASERVICE(SAAS) Sometimes referred to as ‘on-demand software’, SaaS is a software licensing and delivery model where a fully functional and complete software product is delivered to users over the web on a subscription basis. SaaS offerings are typically accessed by end users through a web browser (making the user’s operating system largely irrelevant) and can be billed based on consumption or, more simply, with a flat monthly charge.
  6. 6. SOFTWARE AS A SERVICE (SAAS) Benefits: Issues: Modest software tools  Efficient use of software licenses Centralized management & data  Platform responsibilities managed by providers Multitenant solutions Browser based risks Network dependence  Lack of portability between SaaS clouds
  7. 7. PLATFORMASA SERVICE(PAAS) The capability provided to the consumer is to deploy onto the cloud infrastructure consumer-created or acquired applications created using programming languages, libraries, services, and tools supported by the provider. The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, or storage.
  8. 8. PLATFORM AS A SERVICE (PAAS) Benefits: Issues: Lower administrative overhead  Lower total cost of ownership Scalable solutions More current system software Lack of portability between paas clouds Event based processor scheduling  Security engineering of paas applications
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