Q. Rackspace Cloud Service is an example of :
Cloud infrastructure (e.g. Infrastructure as a service) is the delivery of computer infrastructure (typically a platform virtualization environment) as a service. For example:
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:
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:
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 PaaS: AWS Elastic Beanstalk, Windows Azure, Heroku, Force.com, Google App Engine, Apache Stratos.
Examples SaaS: Google Apps, Microsoft Office 365.
- IaaS
- SaaS
- PaaS
- 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
- IaaS
- PaaS
- 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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