April 2009
Intermediate to advanced
204 pages
6h 58m
English
Content preview from Cloud Application ArchitecturesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The Cloud
The cloud is not simply the latest fashionable term for the Internet. Though the Internet is a necessary foundation for the cloud, the cloud is something more than the Internet. The cloud is where you go to use technology when you need it, for as long as you need it, and not a minute more. You do not install anything on your desktop, and you do not pay for the technology when you are not using it.
The cloud can be both software and infrastructure. It can be an application you access through the Web or a server that you provision exactly when you need it. Whether a service is software or hardware, the following is a simple test to determine whether that service is a cloud service:
If you can walk into any library or Internet cafe and sit down at any computer without preference for operating system or browser and access a service, that service is cloud-based.
I have defined three criteria I use in discussions on whether a particular service is a cloud service:
The service is accessible via a web browser (nonproprietary) or web services API.
Zero capital expenditure is necessary to get started.
You pay only for what you use as you use it.
I don’t expect those three criteria to end the discussion, but they provide a solid basis for discussion and reflect how I view cloud services in this book.
If you don’t like my boiled-down cloud computing definition, James Governor has an excellent blog entry on “15 Ways to Tell It’s Not Cloud Computing,” at http://www.redmonk.com/jgovernor/2008/03/13/15-ways-to-tell-its-not-cloud-computing ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.