Welcome!

@DevOpsSummit Authors: Elizabeth White, Amit Gupta, Liz McMillan, Pat Romanski, Yeshim Deniz

Related Topics: @CloudExpo, Containers Expo Blog, SDN Journal, @DevOpsSummit

@CloudExpo: Article

What ‘Software-Defined’ Really Means | @CloudExpo #AI #SDN #SDX #DevOps

It’s time to bring some clarity into the big picture of SD – what it is, and perhaps even more importantly, what it is not.

The visual model to declarative metadata representation to immutable deployment vision is in essence what SD is all about.

The secret to making this approach practical, and thus the key to understanding why SD approaches have become so prevalent, is the word immutable.

Once we get an SD approach right, we no longer have to touch the deployed technology whatsoever. Instead, to make a change, update the model and redeploy.

In a recent Cortex, I bemoaned the fact that as buzzwords go, Digital Transformation is excessively vague. There is yet another buzzword of our times that is suffering the same fate: Software-Defined.

Rare though buzz-adjectives may be among the pantheon of buzz-nouns and the occasional buzz-verb, Software-Defined (SD) has become remarkably pervasive. In fact, it ties together many different, quite disparate concepts into what has become a vague mishmash.

It's time to bring some clarity into the big picture of SD - what it is, and perhaps even more importantly, what it is not.

The Many Uses of Software-Defined
The most concrete use of the SD adjective is perhaps in the phrase Software-Defined Networking (SDN). SDN separates network equipment's control plane (where routing instructions and other metadata go) from the data plane (where the data being routed go), and then shifts the entire control plane to centralized software.

The network, however, is only the beginning. We have SD infrastructure (SDI), SD data centers (SDDCs), SD wide-area networking (SD-WAN), and more. Each of these approaches follows the lead of SDN, shifting control of various pieces of hardware (or virtualized hardware) to centralized, software-based management and configuration applications.

SDI (which includes SDN), in fact, is at the core of cloud computing. Clearly, there's no way to scale a cloud data center if people had to run from server to server making changes.

Furthermore, Network Functions Virtualization (NFV) from the telco world also falls under the SD banner. With NFV, telco service providers shift all control to software, so that the underlying hardware is entirely generic. No more dedicated switches, routers, and specialized telco gear - all the hardware consist of generic, white-label boxes.

Software-Defined: Beyond the Network
While the network-centric context of SD in corporate networks, cloud data centers, and telco infrastructure forms the home base of the SD movement, SDI is also an essential enabler of continuous integration and continuous delivery (CI/CD), core elements of DevOps.

In order to achieve the velocity that CI/CD promise, the ops part of the story must be SD. Instead of ops people managing servers individually, the DevOps team must be able to deploy and manage software automatically via centralized software control. In other words, the immutable infrastructure principle behind DevOps is nothing more than SDI.

In fact, now that virtualization has matured, all the infrastructure from hypervisors down to bare metal is SD.

At the application level, however, the SD story gets more complicated.

Using software to automate the tasks involved in deploying software is nothing new. Developers have been using runbooks for years - scripts that tell various parts of the environment to execute a series of tasks in a particular sequence.

As DevOps has matured, the notion of the mundane runbook has taken on new life, as DevOps vendors automate increasingly broad swaths of the software development lifecycle (SDLC) with ‘recipes' or other scripting approaches.

As applications and the environments they run in get more complicated, however, the world of DevOps automation finds itself in a Catch-22: the automation scripts or recipes themselves become increasingly complex software applications in their own right, and thus must go through an SDLC of their own, with all the testing and governance that go along with it.

As a result, we're back to square one, manually creating, managing, deploying, and versioning software.

Does Software-Defined Mean Declarative?
To address this Catch-22, some DevOps tools take a declarative approach. Instead of scripting the environment step by step, the declarative approach enables the user to describe the desired behavior, and then the tool interprets such a description and takes the necessary actions to implement such behavior out of sight of the user.

In fact, in many contexts, when most vendors say SD, they really mean that they take a declarative approach, separating configuration from the underlying implementation. There's more to SD behavior than simply following a declarative approach, however.

For example, HTML (and markup languages in general) are declarative. And while we could certainly hand-code a web page by pecking out HTML, we're far more likely to use a visual tool for that purpose.

When we build a web site using such a tool, we're essentially working with models. The model is a visual, configurable representation of the page that the tool can convert into HTML for browsers to render into the page itself for users to view.

In this example, therefore, we have three different ways of thinking about the page: as a visual model, independent of any particular technology implementation of the page; as the HTML markup for that page; and as the action of the browser itself, an application purpose-built to render HTML into visual pages.

Architects and other shrewd readers will recognize the pattern above as being an instance of Model-Driven Architecture (MDA), or its common implementation, Model-Driven Development (MDD).

Does Software-Defined Mean Model-Driven?
MDA is an Object Management Group (OMG) standard
for creating metamodels that represent platform-independent models (our visual model, above) and platform-specific models (the HTML markup in the example), as well as an abstracted approach for turning the former into the latter.

Models, especially visual ones, are in broad use today, but MDA and MDD's best days are behind them. The reason: they didn't deal as well with change as MDA's creators had hoped.

In the MDD world, a developer might build a (platform-independent) model of an application in a model-driven tool and then push a button and out would pop the (platform-specific) source code that represented the working application.

However, if developers wanted to subsequently make a change, they would either need to change the model and regenerate and redeploy all the code (an onerous and time-consuming task), or tweak the auto-generated code itself, thus making it inconsistent with the model.

Round-trip tooling that would take tweaked code and automatically update the model - the holy grail of MDD - has proven impractical.

If we combine some of the principles from MDD with the declarative approach, however, we finally see some light at the end of the tunnel. Instead of the code-generating context of MDA reminiscent of CASE tools of yore, the platform-specific representation for a declarative model consists of a metadata representation of a configuration.

In practice, tools that take this approach create such metadata representations in JSON, XML, or a domain-specific language appropriate to the task at hand. Developers occasionally have reason to view such metadata, but rarely if ever have call to monkey with it directly.

Instead, users - who need not be developers - simply make changes in the model, typically via direct interaction with icons or other visual elements, or by selecting appropriate configurations. The underlying platform takes care of the rest.

The Intellyx Take
The round-trip code-generation vision of MDD proved unworkable, but the visual model to declarative metadata representation to immutable deployment vision is in essence what SD is all about.

The secret to making this approach practical, and thus the key to understanding why SD approaches have become so prevalent, is the word immutable.

Once we get an SD approach right, we no longer have to touch the deployed technology whatsoever. Instead, to make a change, update the model and redeploy.

The most important takeaway from this Cortex: this core SD pattern is fully generalizable. It works with networks, data centers, DevOps-based deployments, and as I'll cover in part two, it's also at the core of the Low-Code/No-Code movement.

It's no wonder, therefore, that Software-Defined Everything (SDX) is rising to the top of the buzzword heap - but SDX is no mere buzzword. It describes the central technological principles behind Agile Digital Transformation.

Copyright © Intellyx LLC. Intellyx publishes the Agile Digital Transformation Roadmap poster, advises companies on their digital transformation initiatives, and helps vendors communicate their agility stories. As of the time of writing, none of the organizations mentioned in this article are Intellyx customers. Image credit: Tim Adams.

More Stories By Jason Bloomberg

Jason Bloomberg is the leading expert on architecting agility for the enterprise. As president of Intellyx, Mr. Bloomberg brings his years of thought leadership in the areas of Cloud Computing, Enterprise Architecture, and Service-Oriented Architecture to a global clientele of business executives, architects, software vendors, and Cloud service providers looking to achieve technology-enabled business agility across their organizations and for their customers. His latest book, The Agile Architecture Revolution (John Wiley & Sons, 2013), sets the stage for Mr. Bloomberg’s groundbreaking Agile Architecture vision.

Mr. Bloomberg is perhaps best known for his twelve years at ZapThink, where he created and delivered the Licensed ZapThink Architect (LZA) SOA course and associated credential, certifying over 1,700 professionals worldwide. He is one of the original Managing Partners of ZapThink LLC, the leading SOA advisory and analysis firm, which was acquired by Dovel Technologies in 2011. He now runs the successor to the LZA program, the Bloomberg Agile Architecture Course, around the world.

Mr. Bloomberg is a frequent conference speaker and prolific writer. He has published over 500 articles, spoken at over 300 conferences, Webinars, and other events, and has been quoted in the press over 1,400 times as the leading expert on agile approaches to architecture in the enterprise.

Mr. Bloomberg’s previous book, Service Orient or Be Doomed! How Service Orientation Will Change Your Business (John Wiley & Sons, 2006, coauthored with Ron Schmelzer), is recognized as the leading business book on Service Orientation. He also co-authored the books XML and Web Services Unleashed (SAMS Publishing, 2002), and Web Page Scripting Techniques (Hayden Books, 1996).

Prior to ZapThink, Mr. Bloomberg built a diverse background in eBusiness technology management and industry analysis, including serving as a senior analyst in IDC’s eBusiness Advisory group, as well as holding eBusiness management positions at USWeb/CKS (later marchFIRST) and WaveBend Solutions (now Hitachi Consulting).

@DevOpsSummit Stories
Today most companies are adopting or evaluating container technology - Docker in particular - to speed up application deployment, drive down cost, ease management and make application delivery more flexible overall. As with most new architectures, this dream takes significant work to become a reality. Even when you do get your application componentized enough and packaged properly, there are still challenges for DevOps teams to making the shift to continuous delivery and achieving that reduction in cost and increase in speed. Sometimes in order to reduce complexity teams compromise features or change requirements
SYS-CON Events announced today that Interface Corporation will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Interface Corporation is a company developing, manufacturing and marketing high quality and wide variety of industrial computers and interface modules such as PCIs and PCI express. For more information, visit http://www.interface-amita.com/aboutus/interface_profile.asp.
SYS-CON Events announced today that mruby Forum will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. mruby is the lightweight implementation of the Ruby language. We introduce mruby and the mruby IoT framework that enhances development productivity. For more information, visit http://forum.mruby.org/.
DevOps at Cloud Expo, taking place October 31 - November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 21st Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete at launch. DevOps may be disruptive, but it is essential.
SYS-CON Events announced today that Cedexis will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Cedexis is the leader in data-driven enterprise global traffic management. Whether optimizing traffic through datacenters, clouds, CDNs, or any combination, Cedexis solutions drive quality and cost-effectiveness.
SYS-CON Events announced today that Mobile Create USA will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Mobile Create USA Inc. is an MVNO-based business model that uses portable communication devices and cellular-based infrastructure in the development, sales, operation and mobile communications systems incorporating GPS capability.
While some developers care passionately about how data centers and clouds are architected, for most, it is only the end result that matters. To the majority of companies, technology exists to solve a business problem, and only delivers value when it is solving that problem. 2017 brings the mainstream adoption of containers for production workloads. In his session at 21st Cloud Expo, Ben McCormack, VP of Operations at Evernote, will discuss how data centers of the future will be managed, how the public cloud best suits your organization, and what the future holds for operations and infrastructure engineers in a post-container world. Is a serverless world inevitable?
SYS-CON Events announced today that MIRAI Inc. will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MIRAI Inc. are IT consultants from the public sector whose mission is to solve social issues by technology and innovation and to create a meaningful future for people.
SYS-CON Events announced today that Keisoku Research Consultant Co. will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Keisoku Research Consultant, Co. offers research and consulting in a wide range of civil engineering-related fields from information construction to preservation of cultural properties. For more information, visit http://www.krcnet.co.jp/eng_site/e_index.htm.
Most of the time there is a lot of work involved to move to the cloud, and most of that isn't really related to AWS or Azure or Google Cloud. Before we talk about public cloud vendors and DevOps tools, there are usually several technical and non-technical challenges that are connected to it and that every company needs to solve to move to the cloud. In his session at 21st Cloud Expo, Stefano Bellasio, CEO and founder of Cloud Academy Inc., will discuss what the tools, disciplines, and cultural aspects are that enterprise companies are considering to get to the cloud and eventually transform the way they build software and services.
SYS-CON Events announced today that Massive Networks, that helps your business operate seamlessly with fast, reliable, and secure internet and network solutions, has been named "Exhibitor" of SYS-CON's 21st International Cloud Expo ®, which will take place on Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. As a premier telecommunications provider, Massive Networks is headquartered out of Louisville, Colorado. With years of experience under their belt, their team of engineers can navigate the Carrier Ecosystem for your IT team acting as an extension of your business, producing a hassle-free experience.
SYS-CON Events announced today that Enroute Lab will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Enroute Lab is an industrial design, research and development company of unmanned robotic vehicle system. For more information, please visit http://elab.co.jp/.
SYS-CON Events announced today that Ryobi Systems will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Ryobi Systems Co., Ltd., as an information service company, specialized in business support for local governments and medical industry. We are challenging to achive the precision farming with AI. For more information, visit http://www.ryobi-sol.co.jp/en/.
Today traditional IT approaches leverage well-architected compute/networking domains to control what applications can access what data, and how. DevOps includes rapid application development/deployment leveraging concepts like containerization, third-party sourced applications and databases. Such applications need access to production data for its test and iteration cycles. Data Security? That sounds like a roadblock to DevOps vs. protecting the crown jewels to those in IT.
21st International Cloud Expo, taking place October 31 - November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some form of XaaS – software, platform, and infrastructure as a service.
With the rise of DevOps, containers are at the brink of becoming a pervasive technology in Enterprise IT to accelerate application delivery for the business. When it comes to adopting containers in the enterprise, security is the highest adoption barrier. Is your organization ready to address the security risks with containers for your DevOps environment? In his session at @DevOpsSummit at 21st Cloud Expo, Chris Van Tuin, Chief Technologist, NA West at Red Hat, will discuss: The top security risks with containers and how to manage these risks at scale including Images, Builds, Registry, Deployment, Hosts, Network, Storage, APIs, Monitoring/Logging, and Federation.
SYS-CON Events announced today that Fusic will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Fusic Co. provides mocks as virtual IoT devices. You can customize mocks, and get any amount of data at any time in your test. For more information, visit https://fusic.co.jp/english/.
"NetApp's vision is how we help organizations manage data - delivering the right data in the right place, in the right time, to the people who need it, and doing it agnostic to what the platform is," explained Josh Atwell, Developer Advocate for NetApp, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
New competitors, disruptive technologies, and growing expectations are pushing every business to both adopt and deliver new digital services. This ‘Digital Transformation’ demands rapid delivery and continuous iteration of new competitive services via multiple channels, which in turn demands new service delivery techniques – including DevOps. In this power panel at @DevOpsSummit 20th Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, panelists examined how DevOps helps to meet the demands of Digital Transformation – including accelerating application delivery, closing feedback loops, enabling multi-channel delivery, empowering collaborative decisions, improving user experience, and ultimately meeting (and exceeding) business goals.
SYS-CON Events announced today that B2Cloud will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. B2Cloud specializes in IoT devices for preventive and predictive maintenance in any kind of equipment retrieving data like Energy consumption, working time, temperature, humidity, pressure, etc.
Cloud Expo, Inc. has announced today that Andi Mann and Aruna Ravichandran have been named Co-Chairs of @DevOpsSummit at Cloud Expo Silicon Valley which will take place Oct. 31-Nov. 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. "DevOps is at the intersection of technology and business-optimizing tools, organizations and processes to bring measurable improvements in productivity and profitability," said Aruna Ravichandran, vice president, DevOps product and solutions marketing, CA Technologies. "It's this results-driven combination of technology and business that makes me so passionate about DevOps and its future in the industry. I am truly honored to take on this co-chair role, and look forward to working with the DevOps Summit team at Cloud Expo and attendees to advance DevOps."
Many organizations adopt DevOps to reduce cycle times and deliver software faster; some take on DevOps to drive higher quality and better end-user experience; others look to DevOps for a clearer line-of-sight to customers to drive better business impacts. In truth, these three foundations go together. In this power panel at @DevOpsSummit 21st Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, industry experts will discuss how leading organizations build application success from all three of these foundations of DevOps - speed, quality, and impact.
SYS-CON Events announced today that NetApp has been named “Bronze Sponsor” of SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. NetApp is the data authority for hybrid cloud. NetApp provides a full range of hybrid cloud data services that simplify management of applications and data across cloud and on-premises environments to accelerate digital transformation. Together with their partners, NetApp empowers global organizations to unleash the full potential of their data to expand customer touchpoints, foster greater innovation and optimize their operations.
Agile has finally jumped the technology shark, expanding outside the software world. Enterprises are now increasingly adopting Agile practices across their organizations in order to successfully navigate the disruptive waters that threaten to drown them. In our quest for establishing change as a core competency in our organizations, this business-centric notion of Agile is an essential component of Agile Digital Transformation. In the years since the publication of the Agile Manifesto, the connection between building better software and business agility has been a tenuous one at best. But now that Agile is maturing and Digital Transformation is driving change across enterprises large and small, companies are realizing that their best bet for achieving business agility is to take the best of Agile and apply it across the entire organization.
SYS-CON Events announced today that SIGMA Corporation will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. uLaser flow inspection device from the Japanese top share to Global Standard! Then, make the best use of data to flip to next page. For more information, visit http://www.sigma-k.co.jp/en/.