What Is DevOps and Why Is It Suddenly So Popular?
DevOps implies the combination of software development methodologies and cultural practices to create the capacity to deliver, and support, applications at high levels of speed and quality. DevOps has become integral in the software development process due to its efficacy in eliminating the barriers of collaboration between the developers and operations team through automation.
The popularity of DevOps comes from its flexibility and collaborative nature, which provides continuous delivery and continuous integration to realize automated deployment and testing in the software development life cycles. The ability of DevOps to solve the traditional conflict between IT developers and the operation managers has made it a popular trend since it eliminates the siloing of developer teams. Don’t think of DevOps as a methodology or process – think of it as a philosophy.
The Software Development Industry Is Always Changing
Software development methodologies become obsolete over time as business problems arise and customer needs change. The models that dominated the 1980s, namely waterfall methods, have undergone major changes and evolved to match modern needs in software development. Today’s software requirements and challenges demand greater attention to collaboration between developers and operation managers. The emergence of DevOps is an ongoing change in the software development industry, which has brought about a continuous re-alignment of the software application development with business needs.
Workflows Have Always Been Planned in Specific Ways
The software development industry has always attached a great importance to workflows in the development process. However, workflows in the development of software must be fine-tuned to impact productivity. A well-tuned development workflow saves time and manpower by focusing the workflows to a manageable development environment.
These Flows Are Termed Software Development Life Cycles
While workflows remain a guiding principle in the software development process, there is a significant effort in the continuous integration and deployment of best practices. The workflows make up the software development life cycles. They are primarily the stages through which software is conceived, formulated and designed. Workflows form mini-projects within software projects from the stages of research and development to coding-preview, which precede the actual coding, and the release of the software. Each of these stages is goal-oriented and objectively executed to progress the software conceptualization to actual development and release.
Traditional Software Development Life Cycles Have Adapted to Meet Modern Expectations
In the years preceding the 21st century, the software development cycles were predominantly guided by the waterfall software development methodology. While these methods were the most advanced approaches available, they had their limitations. In fact, they have been naturally transformed by the ever-changing business needs that could not be contained in a rudiment model. The development cycle in the agile software development approach is not perfect either despite its dynamic advancement over the waterfall model. The development cycle did not fully address the emerging customer needs of the modern world as the older development methods were simply overtaken by new technologies in the 21st century. Like the continuous development and improvement of interior design by home designers to improve the living areas, the development cycle has improved greatly to accommodate new approaches to fulfilling business needs in the modern technology landscape.
Initially the Waterfall SDLC
Originally, the software development process largely relied on the waterfall model in which developers first analyzed requirements, and proceeded to the development of the software in a linear sequence, followed by testing and rework. Developers found fault with this approach as it became limited in its application to solving real world business problems. The idea of software development in a linear sequence made the process rigid and unrealistic as modern software development undergoes multiple re-thinking and definition of system features with continuous builds as software developers today must constantly re-align software with business needs. As a result, the waterfall software development life cycle was overtaken by the agile methods of software development.
As Things Got Faster the Agile SDLC Came About
The information technology advances from the last decade of the 20th century is no match for the 21st century in which business needs have forced the transition from the waterfall model to the agile methods of software development. New technologies and the need for fast processing and large-scale deployment of software lead to conception and adoption of advanced software development life cycles.
The Penchant for Speed of Release Leads Us to DevOps
Software development in the 21st century has become highly focused on aligning itself with specific business needs. Software development has embraced change and adapted the speed of the modern world in which processes in IT operations are expected to be faster and highly efficient. While agile methods of software development were much more rapid, the need for a non-linear development environment brought about the culture of DevOps to merge development teams and IT Operations.
DevOps is the Agile Methodology on a Larger Enterprise Level
The agile methodology of software development encompasses the following elements:
- Embrace change
- Focus on simplicity
- Adapt the code
- Release software packages often
- Get feedback
Agile allows teams to break down the software development life cycle into short sprints in executing practical step by step execution of large-scale projects objectively with optimum productivity. It is quite practical, and more productive and flexible, than attempting to stick to long-term plans that are often rigid and challenging to execute.
The DevOps approach is an extended and refined form of the agile methodology as the processes are extended and adapted to include additional teams. It is a refinement of the agile methodology in which software development goals are streamlined to realize flexibility in the development process and includes more automation.
The Focus of DevOps is to Have Developers, IT Professionals, Quality Assurance Specialists and Support Professionals Working Much Closer Together
DevOps was first adopted by native online businesses running on modern applications hosted on virtual IT infrastructure which is devoid of manual configuration and scaling of applications. Digital businesses that deploy frequently adopted DevOps best practices to improve reliability and velocity. DevOps principles bring together everyone involved in planning, constructing, testing and supporting new and continually improved software. The philosophy is non-linear with fast and automated execution of processes.
The Reduction of Enterprise ‘Siloing’ Allows for Faster Implementations and Changes
In traditional software development life cycles, siloisation is common in the delivery of projects. The project team is typically split into sub-groups into their respective areas of specialty. In contrast, the DevOps model eliminates siloisation to overcome the wasteful process of putting together the contributions of the different sub-groups of specialists in the software development process. Instead, the DevOps culture builds teams differently by combining software development techniques with the appropriate attitude for faster delivery of business solutions. The teams created in a DevOps model typically apply a multi-disciplinary approach which acts as a bridge-builder for realizing rapid implementation and improvisation in the building, testing, releasing and supporting of software packages.
4 Core Elements of DevOps
Effective DevOps shops exhibit strong tendencies toward the following 4 elements:
Since DevOps isn’t a methodology or process, creating a culture dedicated to effectively trying new things to make improvements is essential. You can’t buy DevOps, you have to live it.
A core principle of DevOps is to automate as much as you can to eliminate manual work efforts. Examples include things like automated testing and automated push to production with continuous integration best practices. Here is where a DevOps shop can leverage some emerging technologies, tools and products.
Find key metrics and measure what is important to the organization. These areas could be number of bugs, average time to recover from an outage, or deployment frequency for instance. You can’t measure everything, but measure what’s critical and look for ways to improve performance.
Share what works and share what doesn’t work. Share with others inside the organization and collaborate with others on the outside such as key partners, customers or vendors. Learn and adapt
The DevOps culture is not generic, and what works for one company might not work for you. There is no concrete guideline on how to apply DevOps in every software development environment. It is up to you to integrate it with your core values to achieve rapid results.