CLOUD COMPUTING
The Present and Future 

The purpose of this blog is to raise awareness about CLOUD COMPUTING and help people use CLOUD RESOURCES . Here is the recommended learning sequence.


Cloud Computing: Meaning and Implications.

Cloud computing represents a new revolutionary organizing principle for computing. It is new because of its scale and revolutionary because of its consequences. For instance, it liberates individual and institutions from owning a computing device or infrastructure but still make them capable of accessing computing resources. Today an individual can depend entirely on cloud computing resources to meet her computing needs. A developer can avail and access and meet computational needs from outside by way of cloud computing services and  without building or buying her own computing infrastructure.  


Cloud computing builds resources in large and supply in retail. For example, a user in cyber center is availing a service such as email- Gmail or hotmail . Cloud computing separates developing computing from its consumption. In doing so it has created an entire spectrum of industries - 

• Infrastructure as a service-  business of building and supplying basic computational resources such as computing, storage -   

            

• Platform as a service-  business of providing computing resources and environment for building and operating services 

• Software- as a service - business of developing and offering software 

1.  Importance of Cloud Computing
1. Cloud computing has something to offer to each one of us: Student,Entrepreneur, Business, Educational Institution and more- see this presentation "What is there for me in Cloud Computing" 
2. Overview
1. Key characteristics of cloud computing
2. Cloud Computing: Where did it begin and how did it evolve?
3. Cloud computing layers
1. 3.1 Client 
2. 3.3  Application
3.  3.3 Platform
4.  3.4 Infrastructure
5. 3.5 Server
4. Cloud computing models
1. Public Cloud
2. Private Cloud
3. Hybrid Cloud
4. Community Cloud
5. Government  Cloud
5. Architecture 
1. The Intercloud
2. Cloud Engineering
6.  Cloud storage 
7.  Cloud computing concerns and issues
1. Privacy
2. Compliance
3. Legal
4. Open Source
5. Open Standards
6. Security
7. Sustainability
8. Abuse
8. Cloud computing research

12. Glossary 
13. The next step

Cloud Awareness: Are You Smarter Than a Fifth Grader?

Cloud Awareness: Are You Smarter Than a Fifth Grader?

Cloud Computing: Practical Meaning

Cloud computing is new service paradigm. It refers to the provision of computational resources on demand via a network.In its practical and most widely known form this network is the Internet. However cloud can be developed and deployed on network which not necessarily the Internet. When done that way, cloud may resemble a kind of VPN.. The central idea behind cloud computing model is derived and can be can be compared to the supply of electricity and gas, or the provision of telephone, television and postal services. All of these services are presented to the users in a simple way that is easy to understand without the users needing to know how the services are provided. In other words,  benefits are for users and burden is for provider.  The details workings of a system benhind a service always remains a mystery for the end user.


Example: A letter posted in Bangalore will reach its destination say in Gujarat using postal network consisiting of many points where it gets bagged( putting into a bag meant for a destination) and debagged ( when a letter is removed from a bag when it has to reach a different destination). 

However, postal service seeker is not concerned with these detail. Her only one objective is to send/recieve a letter. The behind the scene mechanism always remains mystery but she is given a simple interface A post office to send her letter. This simplified view is called an abstraction. Similarly, cloud computing offers computer application developers and users an abstract view of services that simplifies and ignores much of the details and inner workings. A provider's offering of abstracted Internet services is often called The Cloud ( wikipedia) 

Cloud computing in a nutshell

Cloud computing is a multi-perspective and multi-dimensional phenomenon.  The answer to the question “What is cloud computing “is depends on who is answering that question. However, the most widely known perspective on cloud computing projects it as a service delivery model that uses the Internet as the common interface to reach its beneficiary. The beneficiary of cloud computing service could be a citizen, consumer or a learner depending on whether it is used by a government, business or university. When applied to business, cloud computing assumes a sharper form and becomes service composition, delivery and consumption model. 

The categories of services that a business can deliver using cloud computing is currently limited to three (although some are on the horizon) and is known as “service models”. The different purposes for which an enterprise can build a cloud computing infrastructure and ways in which it can  determine its scope and access is described in cloud “deployment models” and at present there are four ways in which this can be done. The cloud computing phenomenon because of its huge scope and deep potential to participate in virtually all human affairs – banking to education to health and others is tackling all important and perpetually concerned issues such as cloud security and trans-border business aspects. In sum cloud computing is a living and affecting lives of many.