Let's look at what people are saying about cloud computing or had said.


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Course Description

Course Description Welcome to the Cloud Computing Applications course, the first part of a two-course series designed to give you a comprehensive view on the world of Cloud Computing and Big Data! In this first course we cover a multitude of technologies that comprise the modern concept of cloud computing. Cloud computing is an information technology revolution that has just started to impact many enterprise computing systems in major ways, and it will change the face of computing in the years to come. Course Goals and Objectives Upon successful completion of this course, you will be able to: Understand what cloud computing is and why it is important Get a picture of the economics of cloud computing Learn about Big Data (much more about big data in the second part of this course) Learn about many fundamental technologies that enable cloud computing, such as software defined architectures, virtualization and containers Learn about many “glue” technologies that e...
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What is a Cloud?

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This diagram is produced from a description by NIST or what cloud computing is. And what I'm going to do is to describe all the various parts of it and give you some examples. So first of all, the cloud is out there. Anybody can use it from anywhere. So availability is good and accessibility is good. It really becomes a ubiquitous computing environment. It's convenient, 24/7 you don't have to turn it off, turn it back on, whatever, it's always running for you. And because of all of the input from all the industries into Cloud Computing, it's becoming very convenient to use. 
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How the services of the cloud get delivered to the customer ?

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And there's basically three different ways, three different models for delivery. Let's look at infrastructure as a service. There what we're doing is to provide computer hardware in terms of processors, disks, network. We are allowing people to use those services, to rent them. We're providing a infrastructure as a service that you can go to, you can declare how many computers you want, what are the hardware facilities you want. Then it is up to you to put your own software on top of that system, even your own operating system on top of that system. And you just provide your customers with all that software, but you've rented the hardware. The next level is Platform as a Service, PaaS. Here what you're doing is deploying customer-created applications. So the applications are running on what you're providing in terms of operating system and hardware, as a cloud provider. So, App Engine is an example. Google provides App Engine, you write your appli...
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