Microservices Expo Authors: Elizabeth White, AppDynamics Blog, Liz McMillan, Derek Weeks, Hollis Tibbetts

Related Topics: Containers Expo Blog, @CloudExpo

Containers Expo Blog: Article

Cloud Computing Goes Far Beyond Virtualization

Virtualization vs. Private Cloud (Part 1)

Virtualization vs. private cloud has confused many IT pros. Are they the same? Or different? In what way and how? We have already virtualized most of my computing resources, is a private cloud still relevant to us? These are questions I have been frequently asked. Before getting the answers, in the first article of this two-part series listed below let's first go through a few concepts.

Lately, many IT shops have introduced virtualization into existing computing environmentw. Consolidating servers, mimicking production environment, virtualizing test networks, securing resources with honey pots, adding disaster recovery options, etc. are just a few applications of employing virtualization. Some also run highly virtualized IT with automation provided by system management solutions. I imagine many IT pros recognize the benefits of virtualization including better utilization of servers, associated savings by reducing the physical footprint, etc. Now we are moving into a cloud era, the question then becomes "Is virtualization the same with a private cloud?" or "We are already running a highly virtualized computing today, do we still need a private cloud?"The answers to these questions should always start with "What business problems are you trying to address?" Then assess if a private cloud solution can fundamentally solve the problem, or perhaps virtualization is sufficient. This is of course assuming there is a clear understanding of what is virtualization and what is a private cloud. This point is that virtualization and cloud computing are not the same. They address IT challenges in different dimensions and operated in different scopes with different levels of impact on a business.


To make a long story short, virtualizationin the context of IT is to "isolate" computing resources such that an object (i.e. an application, a task, a component) in a layer above can be possibly operated without a concern of those changes made in the layers below. A lengthy discussion of virtualization is beyond the scope of this article. Nonetheless, let me point out that the terms, virtualization, and "isolation" are chosen for specific reasons since there are technical discrepancies between "virtualization" and "emulation", "isolation" and "redirection." Virtualization isolates computing resources, hence offers an opportunity to relocate and consolidate isolated resources for better utilization and higher efficiency.

Cloud Computing

Cloud computing on the other hand is an ability to make resources available on demand. There are statements made on what to expect in general from cloud computing. A definition of cloud computing published in NIST SP-800-145 outlines the essential characteristics, how to deliver, and what kind of deployment models to be cloud-qualified. Chou further simplifies it and offers a plain and simple way to describe cloud computing with the 5-3-2 Principle as illustrated below.

the 5-3-2 prionciple of cloud computing

The essence of cloud computing is rooted at the appreciation of a "service." In the context of cloud computing, a service simply means the state of being available on demand. So SaaS means software, i.e. an application, is available on demand and the focus is on functions available within and not beyond the application. PaaS provides a run-time environment on demand and the scope becomes what are the common set of capabilities available on demand for applications deployed to this run-time environment. Since the run-time environment is available on demand, an application deployed to the run-time environment then can be brought to a running state on demand. Namely those applications deployed to a PaaS environment are delivered, as a consequence, with SaaS. And IaaS denotes infrastructure available on demand, which means the ability to provision infrastructure on demand. For IT professionals, provisioning infrastructure at an operational level translates to deploying servers. And in the context of cloud computing, all servers are virtualized and deployed in the form of a virtual machines or VMs. So, IaaS ultimately is the ability to deploy VMs on demand.

"On-demand" is not to be casually used. This is a loaded term with a strong connotation of the five essential characteristics of cloud computing. On-demand means high accessibility and always-on readiness since it must be accessible and ready per SLA. In cloud, they are represented by self-service model and ubiquitous access. On-demand suggests there are likely standardization, automation, optimization, and orchestration in place, which are presented collectively as resource pooling and elasticity. On-demand implies the need for auditing and metering, i.e. analytics, so capacity can be planned accordingly. And that is why consumption-based charge-back or show-back model is included in the essential characteristics of cloud computing.

Unequivocally Different

With what has been described above, to realize the fundamental differences between virtualization and private cloud becomes rather straightforward. Noticeably, virtualization is not based on the 5-3-2 principle as opposed to cloud computing is. For instance, a self-serving model is not an essential component in virtualization, while it is essential in cloud computing. One can certainly argue some virtualization solution may include a self-serving component. The point is that self-service is not a necessary , nor sufficient condition for virtualization. While in cloud computing, self-service is a crucial concept to deliver anytime availability to user, which is what a service is all about. Furthermore, self-service is an effective mechanism to in the long run reduce training and support at all levels. It is a crucial vehicle to accelerate the ROI of a cloud computing solution and make it sustainable in the long run.

Virtualization is centered on virtual machines and rooted in infrastructure management, operations, and deployment flexibility. Virtualizationis about the abilities to consolidating servers, managing VMs, streaming desktops, and so on. How to productively configure, deploy, and manage a workload in a deployed VM and

At the same time, cloud is about "service"and "service" is about the readiness and responsiveness relevant to market opportunities. Cloud is about go-to-market. Cloud focuses on making a requested LOB application available on demand and not just on just how to deploy a VM. Cloud is interested in not only operating VMs, but providing insights of a target application running in those VMs.

No, virtualization is not cloud computing. And cloud goes far beyond virtualization. So what are the specifics about virtualization vs. a private cloud? [To be continued in part 2]

This article is a cross-posting from http://aka.ms/yungchou.

More Stories By Yung Chou

Yung Chou is a Technology Evangelist in Microsoft. Within the company, he has had opportunities serving customers in the areas of support account management, technical support, technical sales, and evangelism. Prior to Microsoft, he had established capacities in system programming, application development, consulting services, and IT management. His recent technical focuses have been in virtualization and cloud computing with strong interests in hybrid cloud and emerging enterprise computing architecture. He is a frequent speaker in Microsoft conferences, roadshow, and TechNet events.

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.

@MicroservicesExpo Stories
Without lifecycle traceability and visibility across the tool chain, stakeholders from Planning-to-Ops have limited insight and answers to who, what, when, why and how across the DevOps lifecycle. This impacts the ability to deliver high quality software at the needed velocity to drive positive business outcomes. In his session at @DevOpsSummit 19th Cloud Expo, Eric Robertson, General Manager at CollabNet, will show how customers are able to achieve a level of transparency that enables everyon...
It’s surprisingly difficult to find a concise proper definition of just what exactly DevOps entails. However, I did come across this quote that seems to do a decent job, “DevOps is a culture, movement or practice that emphasizes the collaboration and communication of both software developers and other information-technology (IT) professionals while automating the process of software delivery and infrastructure changes.”
As software becomes more and more complex, we, as software developers, have been splitting up our code into smaller and smaller components. This is also true for the environment in which we run our code: going from bare metal, to VMs to the modern-day Cloud Native world of containers, schedulers and microservices. While we have figured out how to run containerized applications in the cloud using schedulers, we've yet to come up with a good solution to bridge the gap between getting your conta...
DevOps theory promotes a culture of continuous improvement built on collaboration, empowerment, systems thinking, and feedback loops. But how do you collaborate effectively across the traditional silos? How can you make decisions without system-wide visibility? How can you see the whole system when it is spread across teams and locations? How do you close feedback loops across teams and activities delivering complex multi-tier, cloud, container, serverless, and/or API-based services?
SYS-CON Events announced today that Super Micro Computer, Inc., a global leader in Embedded and IoT solutions, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 7-9, 2017, at the Javits Center in New York City, NY. Supermicro (NASDAQ: SMCI), the leading innovator in high-performance, high-efficiency server technology, is a premier provider of advanced server Building Block Solutions® for Data Center, Cloud Computing, Enterprise IT, Hadoop/Big Data, HPC and ...
Today every business relies on software to drive the innovation necessary for a competitive edge in the Application Economy. This is why collaboration between development and operations, or DevOps, has become IT’s number one priority. Whether you are in Dev or Ops, understanding how to implement a DevOps strategy can deliver faster development cycles, improved software quality, reduced deployment times and overall better experiences for your customers.
Explosive growth in connected devices. Enormous amounts of data for collection and analysis. Critical use of data for split-second decision making and actionable information. All three are factors in making the Internet of Things a reality. Yet, any one factor would have an IT organization pondering its infrastructure strategy. How should your organization enhance its IT framework to enable an Internet of Things implementation? In his session at @ThingsExpo, James Kirkland, Red Hat's Chief Arch...
@DevOpsSummit has been named the ‘Top DevOps Influencer' by iTrend. iTrend processes millions of conversations, tweets, interactions, news articles, press releases, blog posts - and extract meaning form them and analyzes mobile and desktop software platforms used to communicate, various metadata (such as geo location), and automation tools. In overall placement, @DevOpsSummit ranked as the number one ‘DevOps Influencer' followed by @CloudExpo at third, and @MicroservicesE at 24th.
“Being able to take needless work out of the system is more important than being able to put more work into the system.” This is one of my favorite quotes from Gene Kim’s book, The Phoenix Project, and it plays directly into why we're announcing the DevOps Express initiative today. Tracing the Steps. For years now, I have witnessed needless work being performed across the DevOps industry. No, not within our clients DevOps and continuous delivery practices. I have seen it in the buyer’s journe...
When people aren’t talking about VMs and containers, they’re talking about serverless architecture. Serverless is about no maintenance. It means you are not worried about low-level infrastructural and operational details. An event-driven serverless platform is a great use case for IoT. In his session at @ThingsExpo, Animesh Singh, an STSM and Lead for IBM Cloud Platform and Infrastructure, will detail how to build a distributed serverless, polyglot, microservices framework using open source tec...
A completely new computing platform is on the horizon. They’re called Microservers by some, ARM Servers by others, and sometimes even ARM-based Servers. No matter what you call them, Microservers will have a huge impact on the data center and on server computing in general. Although few people are familiar with Microservers today, their impact will be felt very soon. This is a new category of computing platform that is available today and is predicted to have triple-digit growth rates for some ...
Without lifecycle traceability and visibility across the tool chain, stakeholders from Planning-to-Ops have limited insight and answers to who, what, when, why and how across the DevOps lifecycle. This impacts the ability to deliver high quality software at the needed velocity to drive positive business outcomes. In his general session at @DevOpsSummit at 19th Cloud Expo, Eric Robertson, General Manager at CollabNet, will discuss how customers are able to achieve a level of transparency that e...
SYS-CON Events announced today that Enzu will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Enzu’s mission is to be the leading provider of enterprise cloud solutions worldwide. Enzu enables online businesses to use its IT infrastructure to their competitive advantage. By offering a suite of proven hosting and management services, Enzu wants companies to focus on the core of their online busine...
24Notion is full-service global creative digital marketing, technology and lifestyle agency that combines strategic ideas with customized tactical execution. With a broad understand of the art of traditional marketing, new media, communications and social influence, 24Notion uniquely understands how to connect your brand strategy with the right consumer. 24Notion ranked #12 on Corporate Social Responsibility - Book of List.
In his keynote at 19th Cloud Expo, Sheng Liang, co-founder and CEO of Rancher Labs, will discuss the technological advances and new business opportunities created by the rapid adoption of containers. With the success of Amazon Web Services (AWS) and various open source technologies used to build private clouds, cloud computing has become an essential component of IT strategy. However, users continue to face challenges in implementing clouds, as older technologies evolve and newer ones like Docke...
The reason I believe digital transformation is not only more than a fad, but is actually a life-or-death imperative for every business and IT executive on the planet is simple: there will be no place for an “industrial enterprise” in a digital world. Transformation, by definition, is a metamorphosis from one state to another, wholly new state. As such, a true digital transformation must be the act of transforming an industrial-era organization into something wholly different – the Digital Enter...
Just over a week ago I received a long and loud sustained applause for a presentation I delivered at this year’s Cloud Expo in Santa Clara. I was extremely pleased with the turnout and had some very good conversations with many of the attendees. Over the next few days I had many more meaningful conversations and was not only happy with the results but also learned a few new things. Here is everything I learned in those three days distilled into three short points.
In his session at 19th Cloud Expo, Claude Remillard, Principal Program Manager in Developer Division at Microsoft, will contrast how his team used config as code and immutable patterns for continuous delivery of microservices and apps to the cloud. He will show the immutable patterns helps developers do away with most of the complexity of config as code-enabling scenarios such as rollback, zero downtime upgrades with far greater simplicity. He will also have live demos of building immutable pipe...
Application transformation and DevOps practices are two sides of the same coin. Enterprises that want to capture value faster, need to deliver value faster – time value of money principle. To do that enterprises need to build cloud-native apps as microservices by empowering teams to build, ship, and run in production. In his session at @DevOpsSummit at 19th Cloud Expo, Neil Gehani, senior product manager at HPE, will discuss what every business should plan for how to structure their teams to d...
When we talk about the impact of BYOD and BYOA and the Internet of Things, we often focus on the impact on data center architectures. That's because there will be an increasing need for authentication, for access control, for security, for application delivery as the number of potential endpoints (clients, devices, things) increases. That means scale in the data center. What we gloss over, what we skip, is that before any of these "things" ever makes a request to access an application it had to...