Building and operating a private cloud ourselves is simple, right? Give our experienced IT folks a budget for hardware and software, a clear mandate, and deadlines, and we’re likely to succeed. That’s what we’ve always done, and it’s worked out tolerably well. Private cloud isn’t so different from running our own virtual machine environment, and [...]
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An informal survey of my application developer friends revealed four main types of motivations driving developers. These four types of motivations are represented in this diagram: Individual developers can be motivated more or less altruistically. Individual developers can also be focused on the external manifestations of success – such as appreciative customers – or on [...]
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Like companies producing any kind of offering, software companies require three elements in order to successfully deliver: knowing what to build, knowing how to build it, and knowing how to deliver it to the customer. When each of these three functions – research, engineering, and delivery – does its job independently, you get slow progress [...]
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Traditional descriptions of cloud computing and the various cloud operating models – IaaS, PaaS, SaaS – focus on the locus of responsibility for various layers of the system: facilities, network, storage, servers, etc. But these descriptions typically omit a critical element. Can you spot it in the diagram below? The missing layer is the only [...]
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As of Februrary 2011 AWS S3 has been able to serve static websites, giving you superior availability for unchanging (or seldom-changing) content. But most websites today are not static; dynamic elements drive essential features such as personalized pages, targeted advertisements, and shopping carts. Today’s release from AWS CloudFront: Support for Dynamic Content alleviates some of the challenge [...]
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Reading AWS’s recent announcement of the AWS Marketplace you would think that it provides a catalog of click-to-deploy, highly-available, scalable applications running on EC2. You’d be partially right: the applications available in the AWS Marketplace are deployable in only a few clicks. But highly-available and scalable services will be difficult to build using Marketplace images. [...]
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Today I presented at the Enterprise Cloud Summit at the Interop conference. The talk was officially entitled Ten Cloud Design Patterns, but because my focus is on the application, I re-titled it. And I mention more than ten patterns, hence the final title Many Cloud App Design Patterns. I explore a number of important issues for [...]
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The need for cloud provider price transparency. What is a workload and how to move it. “Open”ness and what it means for a cloud service. Various libraries, APIs, and SLAs. These are some of the engaging discussions that developed at the Platforms and Ecosystems “Birds of a Feather”/”Unconference”, held on Tuesday evening March 8th during the CloudConnect 2011 [...]
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How much time is “wasted” in the paid-for but unused portion of the hour when you terminate an instance? How can you recapture this time – which represents compute power – and put it to good use? After all, you’ve paid for it already. This article presents a technique for repurposing an instance after you’re [...]
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AWS Spot Instances have an interesting economic characteristic that make it possible to game the system a little. Like all EC2 instances, when you initiate termination of a Spot Instance then you incur a charge for the entire hour, even if you’ve used less than a full hour. But, when AWS terminates the instance due [...]
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