Cloud Computing Architecture

Elements of cloud computing may resemble earlier computing eras, but advances in virtualization, storage, connectivity, and processing power are combining to create a new technical ecosystem for cloud computing, and the result is a fundamentally different and compelling phenomenon.

The adoption of cloud computing services is growing rapidly, and one of the reasons is because its architecture stresses the benefits of shared services over isolated products. This use of shared services helps an organization focus on its primary business drivers, and lets information system technology departments reduce the gap between available computing capacity (always-on high resource) and required systems demand (mostly low volume with occasional spikes). This results in a much more efficient usage-based cost model.

Cloud computing architecture is still evolving, and will continue to evolve and change for a long time. As we begin to make sense of the various vendors’ rush to brand everything as “cloud computing,” it’s important to try to weed out the purely marketing-related acronyms and concepts. The goal of this section is to describe the cloud concepts and terminology that appear to be able to stand the test of time. Then, later in this section, we’ll examine the benefits of adopting these concepts, and how organizations are restructuring their information models to compete and thrive.

For some time now, the generally agreed upon classification scheme for cloud computing has been coined the Software-Platform-Infrastructure (SPI) model. This acronym represents the three major services provided through the cloud: SaaS, or Software as a Service; PaaS, Platform as a Service; and IaaS, Infrastructure as a Service.

Although there are a few other concepts circulating that suggest variations on this schema (we’ll address some of these in the section “Alternative Deployment Models”), the SPI framework for cloud computing is currently the most widely accepted cloud computing classification. NIST follows this framework, and most cloud service providers support this concept.

Although a lot of cloud computing infrastructure is based on existing technology, there are many differences between the SPI framework and the traditional IT model. For instance, a traditional enterprise-wide application rollout requires resources and coordination from many parts of the organization. This rollout may require numerous new hardware (servers, perimeter network devices, workstations, backup systems), operating systems, communication link provisioning, and user and management training, for example.

One advantage of the traditional model is that software applications are more customizable, but even this advantage often comes at a high cost in resources and effort.

In the traditional IT model, software applications may require substantial licensing and support costs. These licensing costs may be based on formulae that don’t translate well to the actual intended use of the application, such as hardware requirements (number of servers, processors, communication links) or other company characteristics unrelated to the original intent of the application (total number of employees in the organization, total number of remote offices, etc.).

In addition, changes in the original licensing structure due to usage increases (additional per-seat needs) may create substantial costs down the line, such as additional hardware, support SLAs, and IT resources.

In the traditional IT model, security is often owned “in-house,” with security professionals and supporting security infrastructure (firewalls, intrusion detection/prevention systems, e-mail and web monitoring systems, etc.) under the direct control of the organization. This may make it easier to provide regulatory compliance for auditing purposes using the traditional model. However, the drawback of this security ownership is the infrastructure overhead, which requires considerable resources of manpower to secure properly.

Typically, organizations employing the SPI framework don’t own the infra-structure that hosts the software application. They instead license application usage from the cloud provider, by employing either a subscription-based license or a consumption-oriented model. This enables companies to pay for only the resources they need and use, and to avoid paying for resources they don’t need, thus helping them avoid a large capital expenditure for infrastructure.

The cloud service provider that delivers some or all of the SPI elements to the organization can also share infrastructure between multiple clients. This helps improve utilization rates dramatically by eliminating a lot of wasted server idle time. Also, the shared use of very high-speed bandwidth distributes costs, enables easier peak load management, often improves response times, and increases the pace of application development.

Eugene Coscodan is a SEO Strategist working at Reliable Networks. He is interested in Internet marketing, Internet technology, it support, and telephony services. If you’d like to connect with him, contact Reliable Networks.
Become a Pro Blogger with these Tips
Creating a blog can seem overwhelming because there are so many option, possibilities and choices to make. The potential and ideas for blogs are infinite. The tips in this article are designed to help you to create a blog that will accomplish your goals and will reach the audience that your blog was created for.
Post original content on your blog, and include pictures or other content. Linking out to relevant sites, quoting experts in a field or adding videos can also make a post more interesting. Make sure you don't plagiarize, though, because people will stop visiting your site. Be unique and interesting with posts!
If possible, have someone else go over your blog posts before you post them. This is especially critical for internet marketing posts. People have a tendency to be blind to their own errors, so they will often miss problems with grammar, spelling, sequence, or logic. Another person may also be able to provide information you have left out or correct errors of fact.
When blogging, you should make sure that you make your RSS feed as obvious as possible. You can not expect other readers to find it if it blends in with all the text in your blog. This is why you should put it in a prominent position on your blog, and try to make use of the orange RSS icon if possible.
If you are going to blog, you need to make sure you choose a niche or market that you are passionate about. There are plenty of blogs out there, and there are just as many topics to choose from. Stay specific, and choose a blogging subject that you can create a successful blog with.
Break your blog up into appropriate headings and subheadings. This serves to make the material more palatable. Readers' have a tendency to scan the page for key concepts before they begin to read the entire blog. Headings and subheadings will help them get what they are looking for and ensure they stay on your page long enough to read the entire blog.
Try breaking your posts into manageable pieces. This is a very easy, but unfortunately ignored blogging tactic. Do not write like you are trying to run a marathon. Break up your posts in smaller pieces. This can help boost your SEO, and it can help create a clearer writing approach. This can actually help you think better.
Learn everything you can about topics related to your blog. The more quality information you can share, the better your blog will be. The greater your knowledge, the more readers will view you as an expert in the field. This will make the reader more likely to share links to your blog with their contacts.
Do not start a blog entry unless you are sure that you can sit down and finish the entire thing. You want to let your mind stay on task, and if you have to stop for any reason, it will be very hard to pick up where you left off.
You may want to have contests or giveaways on your site. This helps readers to become a part of your blog and increases their excitement about visiting. Readers are also likely to send links to contacts interested in the content of your contest. The giveaway can vary, depending on your site.
Make friends with other blogs that relate to your target niche. You can post useful comments on these blogs, and this will help promote your own blogging as well. Besides providing comments, some blogs will allow you to make guest posts, as this can be mutually beneficial to both of you.
The more blogs you write, the more ways potential readers have of finding you via search engines. The more people that successfully make their way to your site, the more visitors you will have actually reading your content. Use this guidance and watch your visitor numbers grow.
As you probably already know, creating a blog can be overwhelming at first, because the possibilities and potential for blogs are endless. The tips and techniques from the above article were gathered to help you create a blog that will get your message across to the audience that you are seeking to reach.

$1*/ mo hosting! Get going with GoDaddy!

Leave a Reply

%d bloggers like this: