Visibility of Clouds

Posted: May 17, 2011 by lisaneubert in development
Tags: , ,

Last week I gave you a brief introduction about how CLOUD COMPUTING works. Today I am going to write about the privacy of clouds – although there are far above our heads.

“If there is something which you don’t want to be known by everybody, then you shouldn’t do it at all!”, Ex-Google Boss Eric Schmidt about the privacy of CLOUD COMPUTING. This new trend gives you the possibility to remember and save things by a specific access system. But like all IT-systems it is not safe 100%. Due to this fact, everybody who likes to be as private as possible should take his or her pencil rather than his or her computer.

There are three main supply models:

Starting with a Public cloud, it is to say that this cloud is available for everybody over the Internet. You can use application services as well as storages services of a service provider. Public models may be free, but they can be also based on a pay-per-usage model.

The provider incurs any expenses concerning hardware, application and bandwidth costs. This means that you can easily set up a Public Cloud. You pay just what you really use / have used. On the one hand, using those clouds is inexpensive, on the other hand you do not wast any resources.

But using such a cloud also means that everthing is visible for everybody. There is no real data security. You may use Exclusive Clouds which require that user and provider know each other and that a treaty with determined conditions is set up. Open Clouds instead do not require meetings and agreements. The provider has to develop his/ her offer by him-/ herself without any input of customers. Provider and user needn’t know each other.

Amazon, Google (AppEngine), Windows Azure and IBM use public clouds as services platforms.

Private Clouds are just possible to set up, if user and provider are in oe company. Hosted services are provided to a limited number of people only. Private Clouds are useful for those companies who want and need to have more control over their data. You do also not have to worry about your data security, because of many limitations within your own organization adn because you manage your private cloud by yourself.

An organization can use three different types of Private Clouds: An Exploratory Cloud is just a testing cloud. You test whether internal applications works or why not. Departmental Clouds are used within one department which means that provider and user are together. You do not use them for testing, but for real services. Enterprise Clouds are used by the whole organizations, thus different departments. An Enterprise Cloud is a real and the highest developed Private Cloud.

InterContinental Hotels Group and RehabCare use private clouds to manage their customers’ data more with more security.

Hybrid Clouds are a mixture between Private Clouds and Public Clouds. The company uses those two clouds partly. This means that some services are provided in-house and some are managed by external providers. Using this cloud, makes it possible to operate more cost-efficiently and without avoiding risky applications.

Amazon for instance uses Hybrid Clouds: It uses a Private Cloud Services for its storage data, but operational customer data is managed by a Public Cloud.

You see, it is not easy to decide which Cloud would be the best for your own company. Your decision does not depend on your security feeling only, but also on your business costs, partnerships and future plans.

I may discuss about CLOUD COMPUTING and business next time, because this area could be really interesting for budding managers.

See you, Lisa.


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