InformationWeek::Analytics issued a report earlier this month entitled, "Cloud ROI: Calculating Costs, Benefits, Returns," which compares the costs of acquiring hardware and the costs of utilizing cloud based services and the associated ROI. While the basic analysis of the costs makes sense, the comparison is flawed: the difference between the two is cost savings, not ROI.
The spreadsheet attached to the report is fairly straightforward. All costs involved in the acquisition of capital assets vs. leased assets (i.e., on demand) and the related costs are listed and compared. A present value calculation is performed to show the total cost of ownership over a number of years. It is evident that cloud based services are cheaper than acquiring capital assets for the same purpose. This forms the basis for the ROI calculation but the report never actually calculates the ROI; it gives the reader just enough information to be misinformed...
To make the numbers make more sense, the report needs to add a revenue stream. That revenue stream would allow the reader to find the breakeven point. And, if there was enough time, the report could go further and examine the impact of asset lifecycle and the replacement of capital assets versus using leased assets over time. In this case we would see the economic value of using assets on demand instead of acquiring them.
The one statement, from Lew Moorman, Chief Strategy Officer of Rackspace, with which I agree is that organizations need to evaluate how to make cloud based services fit into their IT service catalog rather than whether they can save money by migrating everything into the cloud. The latter discussion is probably not going to be very productive since not all services can be or should be moved into the cloud though, financially, it might make perfect sense. IT and Finance often butt heads.
In previous posts (here and here) I discussed ROI of Cloud Based Services and how it is often confused for cost savings, touching briefly on the concept of breakeven.
The Case for Cloud is an ongoing discussion about cloud computing and how it impacts business and the economy.
Showing posts with label on demand. Show all posts
Showing posts with label on demand. Show all posts
Jun 9, 2010
May 11, 2010
Cloud Computing: Nomenclature Issues
The nomenclature for cloud computing, or the model for services consumed on a utility basis, has drawn much criticism and caused much confusion.
For those of you who are not aware, cloud computing draws its name from the fact that IT resources are "in the cloud", meaning that they are somewhere on the Internet, off your network. (A stylized cloud is often used to represent the Internet in architecture diagrams.) The most common term for cloud computing is the "as-a-Service" suffix: infrastructure (IaaS), platform (PaaS), software (SaaS), and storage (such as Amazon's S3). Clearly, IaaS and PaaS are derived directly from the hardware and development platforms and provide users with instances of the underlying resources on demand while storage is the use of storage media as a resource. SaaS, however, poses a problem: is software "cloud computing"? SaaS splits the community into two distinct camps: yes, SaaS is cloud computing because it is available in the cloud; no, SaaS is not cloud computing because you are subscribing to software on a monthly basis (unlike the utility model for IaaS and PaaS).
The NIST defines cloud computing as follows:
"Cloud computing is a model for enabling convenient, on demand network access to a shared pool of configurable computing resources (e.g., networks, servers, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models."
This definition leaves a bit of room for interpretation. Because of this, I propose alternate terms: "Cloud Based Services", "Services in the Cloud", or "Cloud Services". Each of these terms indicate that the services are consumed (be they IaaS, PaaS, SaaS, or storage) are located or based in the cloud and do not confuse the issue of SaaS being a compute resource per se.
While the terms "Cloud Based Services", "Services in the Cloud", and "Cloud Services" are not revolutionary, they clarify the concept and are inclusive of the various forms of cloud computing.
For those of you who are not aware, cloud computing draws its name from the fact that IT resources are "in the cloud", meaning that they are somewhere on the Internet, off your network. (A stylized cloud is often used to represent the Internet in architecture diagrams.) The most common term for cloud computing is the "as-a-Service" suffix: infrastructure (IaaS), platform (PaaS), software (SaaS), and storage (such as Amazon's S3). Clearly, IaaS and PaaS are derived directly from the hardware and development platforms and provide users with instances of the underlying resources on demand while storage is the use of storage media as a resource. SaaS, however, poses a problem: is software "cloud computing"? SaaS splits the community into two distinct camps: yes, SaaS is cloud computing because it is available in the cloud; no, SaaS is not cloud computing because you are subscribing to software on a monthly basis (unlike the utility model for IaaS and PaaS).
The NIST defines cloud computing as follows:
"Cloud computing is a model for enabling convenient, on demand network access to a shared pool of configurable computing resources (e.g., networks, servers, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models."
This definition leaves a bit of room for interpretation. Because of this, I propose alternate terms: "Cloud Based Services", "Services in the Cloud", or "Cloud Services". Each of these terms indicate that the services are consumed (be they IaaS, PaaS, SaaS, or storage) are located or based in the cloud and do not confuse the issue of SaaS being a compute resource per se.
While the terms "Cloud Based Services", "Services in the Cloud", and "Cloud Services" are not revolutionary, they clarify the concept and are inclusive of the various forms of cloud computing.
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