What is Cloud computing? [closed]

Answer 1

None of those things makes your application a cloud application. It's a cloud application if it runs in a cloud. What is a cloud?

Difference between cloud computing and distributed computing?

The web site development model does tend to be amenable to running in a cloud because many parts of the system are inherently parallel. However, there are various design decisions (er, mistakes?) you could make that would limit the amount of parallelism that could be achieved, though. You can still run such a program in a cloud but it won't get nearly the kind of benefit that a highly parallel application would.

The technologies that you are talking about can be used to create highly parallel applications, but this isn't automatic, you still have to understand what you're doing.

Answer 2

First, to get this out of the way: Cloud Computing is a marketing buzzword and ill-defined one (at least at the moment).

I would recommend dissecting this overarching buzzword and in market segments, namely:

• IaaS: Infrastructure as a Service (e.g. Amazon EC2)
• Paas: Platform as a Service (e.g. Google AppEngine)
• DaaS: Database as a Service (e.g. Amazon RDS)
• SaaS: Software as a Service (e.g. Salesforce)

Coming back to your points:

1. If you expose a Service through a Web Interface, you could classify this in the Cloud Computing bin
2. Traditional Web Sites per-se would not fall in the CC category (see above segments)
3. I do not know what a "Cloud Application" is: are you trying to define a new term ? ;-)

Answer 3

Cloud computing is just a specific way to order, use and discard computers. It is similar to using banking services with help of ATM or buying things from vending machines.

The goal of cloud computing is to completely exclude any live person from provider's side.

Any other good and bad properties of cloud computing are just a byproduct of this idea.

Answer 4

Aside from the latest marketing term?

Basically all the resources your program needs are held "somewhere" on the internet. You interact with them via a defined service contract; SOAP, REST, POX or whatever and what happens after that is up to the service provider. You don't care about how your information is stored or how the service is provided, just that it is.

If, for example, you wanted to store files, you may choose to use Amazon's S3 cloud system. You connect to the service and upload your files; you don't know or care where the files are stored, only the location of the entry point to that service.

If you have an application then it may also be ran in the cloud, assuming it's suitable. Live Mesh for example is a virtual machine which you can code against and run your software both locally and within the cloud, so your user simply goes to a URI and finds your program, you don't care where it is beyond it being available somewhere on the cloud.

Answer 5

i suggest you to read this paper

Above the Clouds: A Berkeley View of Cloud Computing, armbust at all

There will be no doubt on your mind.And in research area this paper is referred as introduction to cloud computing

Answer 6

Cloud computing is a type of shared computing where one utilizes large-scale computing infrastructure. In other words, powerful hardware is interlinked, often to fully realize the benefits of virtualization. This hardware can be shared among many users in the form of a public cloud or dedicated to one entity as it is used in private cloud computing.

The public cloud is defined as a multi-tenant environment, where you buy a “server slice” in a cloud computing environment that is shared with a number of other clients or tenants.

Private cloud computing, on the other hand, by definition is a single-tenant environment where the hardware, storage and network are dedicated to a single client or company.