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answered Jan 17 by anonymous
Advantages of cloud computing are very important.the advantages are the Drive down costs: Avoid large capital expenditure on hardware and upgrades.A managed cloud solution means that your hosting provider is doing this for you.if you want to learn more on cloud computing just visit the following link:http://e-learning.benchfolks.com/
commented Jul 12 by JhonyWalkers
Software as a service (SaaS)
Main article: Software as a service
The software-as-a-service (SaaS) service-model involves the cloud provider installing and maintaining software in the cloud and users running the software from their cloud clients over the Internet (or Intranet). The users' client machines require no installation of any application-specific software - cloud applications run on the server (in the cloud). SaaS is scalable, and system administrators may load the applications on several servers. In the past, each customer would purchase and load their own copy of the application to each of their own servers, but with the SaaS the customer can access the application without installing the software locally. SaaS typically involves a monthly or annual fee

Software as a service provides the equivalent of installed applications in the traditional (non-cloud computing) delivery of applications.

Software as a service has four common approaches:

    single instance
    multi instance
    flex tenancy

Development as a service (DaaS)

Development as a service is web based, community shared development tools. This is the equivalent to locally installed development tools in the traditional (non-cloud computing) delivery of development tools.
Data as a service (DaaS)

Data as a service is web based design construct where by cloud data is accessed through some defined API layer. DaaS services are often considered as a specialized subset of a Software as a service offering.
Platform as a service (PaaS)
Main article: Platform as a service

Platform as a service is cloud computing service which provides the users with application platforms and databases as a service. This is equivalent to middleware in the traditional (non-cloud computing) delivery of application platforms and databases. We can take on example for this as Microsoft Azure provides platform as services for multilple language,if we use .net platform then we can build products using .net framework which will be provided by Microsoft Azure.
Infrastructure as a service (IaaS)

Infrastructure as a service is taking the physical hardware and going completely virtual (e.g. all servers, networks, storage, and system management all existing in the cloud). This is the equivalent to infrastructure and hardware in the traditional (non-cloud computing) method running in the cloud. In other words, businesses pay a fee (monthly or annually) to run virtual servers, networks, storage from the cloud. This will mitigate the need for a data center, heating, cooling, and maintaining hardware at the local level.

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