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Rackspace Cloud Service is an example of

  By GK Planet Team      
Q. Rackspace Cloud Service is an example of :
  1. IaaS
  2. SaaS
  3. PaaS
  4. All of the mentioned
Answer: IaaS
Cloud computing is the on-demand availability of computer system resources, especially data storage and computing power, without direct active management by the user. The cloud is a metaphor for the Internet based on how it is described in computer network diagrams. The term is generally used to describe data centers available to many users over the Internet.

3 Types of Cloud Computing Services

  1. IaaS
  2. PaaS
  3. SaaS

IaaS (Infrastructure as a service)


Cloud infrastructure (e.g. Infrastructure as a service) is the delivery of computer infrastructure (typically a platform virtualization environment) as a service. For example:
  • Full virtualization (GoGrid, Skytap)
  • Grid computing (Sun Grid)
  • Management (RightScale)
  • Paravirtualization (Amazon Elastic Compute Cloud, Rackspace)
Rackspace and Amazon AWS have Infrastructure as a Service (IaaS) offerings.

PaaS (Platform as a service)


A cloud platform (e.g. Platform as a service) (the delivery of a computing platform and/or solution stack as a service) facilitates the deployment of applications without the cost and complexity of buying and managing the underlying hardware and software layers. For example:
  • Web application frameworks
  • Python Django (Google App Engine)
  • Ruby on Rails (Heroku)
  • Web hosting (Mosso)
  • Proprietary (Azure, Force.com)

SaaS (storage as a service)


Cloud storage is the delivery of data storage as a service (including database-like services), often billed on a utility computing basis (e.g. per gigabyte per month). For example:
  • Database (Amazon SimpleDB, Google App Engine's BigTable datastore)
  • Network-attached storage (MobileMe iDisk component, Nirvanix CloudNAS)
  • Synchronization (Live Mesh Live Desktop component, MobileMe push functions)
  • Web service (Amazon Simple Storage Service, Nirvanix SDN)
Q&A
Is Rackspace IaaS or PaaS?
Answer: IaaSThe Rackspace Cloud is a set of cloud computing products and services billed on a utility computing basis from the US-based company Rackspace. Offerings include Cloud Storage ("Cloud Files"), virtual private server ("Cloud Servers"), load balancers, databases, backup, and monitoring.

Examples of IaaS, PaaS and SaaS

Examples IaaS: Amazon EC2, Windows Azure, Rackspace, Google Compute Engine.

Examples PaaS: AWS Elastic Beanstalk, Windows Azure, Heroku, Force.com, Google App Engine, Apache Stratos.

Examples SaaS: Google Apps, Microsoft Office 365.
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