What Is DevOps? Everything you need to know
Each time a developer finished a feature, they passed it to the QA team, who further passed it to operations, who tried to deploy something they had never seen before. That process was slow, tense, and full of gaps where things could go wrong.
The purpose of DevOps is to solve that. It makes software deployment more reliable and more frequent than it used to be, removes manual work and replaces it with automated software deployment, and unites the efforts of development and operations together.
This guide provides all the knowledge you need about DevOps: how it works, the DevOps lifecycle, the tools that are part of DevOps, what a DevOps team does, and how to get started.
DevOps Defined
DevOps is a software development approach characterized by tight integration between the software development and operations teams from the start to the end of the product life cycle, helping speed up software development and deployment.
With the DevOps model, the Dev and operations teams are not siloed. These two terms merge into a single team focusing on providing quick and reliable software solutions to valuable customers.
The Core Principles of DevOps
The principles of DevOps methodology are the foundation on which the teams are structured and the way they work:
Automation by default: It refers to automating repetitive manual tasks in the development phase that can hamper the development lifecycle.
Effective Collaboration: Along with the automation processes, effective communication is also required within the DevOps team to improve the software delivery process.
Continuous improvement: The DevOps team also needs to consistently keep an eye on major performance metrics to see areas of improvement and address them early in the process.
Shorter feedback loops: Through regular automation & improvement, a devOps team can largely devote their time to understanding real users' feedback and what they want.
These DevOps principles can be applied in different ways depending on the organization's work structure, but organizations that incorporate these principles into their DevOps model can improve their code quality and compete effectively in the market.
How DevOps Works
Before DevOps, the development team and the operations team were independent of one another and existed in silos. Under a DevOps model, these two odd terms, ‘Dev’ and ‘Ops,’ merge into a single team where they work together across the entire application development lifecycle from development to deployment, which enhances their cross-functional skills that lead to a seamless delivery lifecycle.
DevOps addresses the slow release cycle issues by uniting both teams' efforts around the same goal. These teams automate processes that require minimal manual effort. They use tools and a technology stack to automate workflows to improve and enhance applications quickly and reliably.
The DevOps Lifecycle
The DevOps lifecycle is typically outlined as an infinite loop because it is an iterative process that is not linear. There is no beginning or end. There are always multiple aspects of the teams at various stages of planning and development.
Plan:
The initial step of the DevOps lifecycle is to write down all of the new capabilities and functionality to be added to the next version. The team generally addresses the user feedback/inputs from internal stakeholders.
Build
Here, the new code is integrated with the existing code and further tested and packaged for release and deployment. Activities that are often automated at this stage include merging code changes into a master copy; placing the updated code into a repository; and compiling, testing, and packaging code into an executable file.
Test
Once code changes have been merged the DevOps team tests the code, usually through automated testing, to help give a sense of confidence and assurance of the quality and predictability of the code when it is deployed. Continuous testing extends the principle of shift-left testing that helps organizations to address issues earlier and act on them immediately.
Release
The Release stage is the final stage in the workflow before the user is able to use the Application, after the Code testing. This stage is for the DevOps team to make sure that the software solution created fulfils exceptional quality requirements and is prepared for external application.
Deploy
The team puts the project into the production environment at this stage, and users will access the application. Often, the team may release features and updates slowly and steadily to a fraction of the users, instead of all of the users at once. It assists the team in understanding the application.
Operate
The DevOps team then optimizes the application at regular intervals and verifies that the regular updates have no negative impact on the users.
Monitor
The team consolidates and reviews the feedback from the users, and strives to continuously improve current and new products going forward at this point. The production you see is what you create in the next one. DevOps is often referred to as a learning system, not a delivery system.
Key DevOps Practices
DevOps practices are the specific, repeatable activities that make the lifecycle work. They are distinct from tools, though tools implement them.
Continuous Integration
It refers to the software development practice that allows developers to frequently merge code changes into a central repository, after which automated builds and tests are executed. The major aim of this practice is to address and resolve bugs quickly to facilitate a smooth user experience.
Continuous Delivery
Continuous delivery is another type of software development practice where code changes are automatically deployed to a production/testing environment.
Infrastructure as Code
The key to successful DevOps adoption lies in the ability to quickly provision and manage the infrastructure. Infrastructure as Code ( IaC) does the exact thing required to manage infrastructure with code. Thereby, making it easier to automate the deployment and provisioning of infrastructure.
Monitoring
The DevOps teams monitor the entire development lifecycle from planning to deployment to see how application and infrastructure performance impacts the users. By capturing and analyzing data, organizations can find root causes or updates that are hampering the user experience, and immediately work on them.
Automation
It refers to the practice of automating tasks like testing, deployment, and monitoring. Moreover, Automation ensures that high-quality software is available to users quickly as the DevOps team can spend the majority of their into prioritzed activity via automation practice.
Microservices
Microservices is an architectural style of designing an application as a collection of small, deployable services that expose a different business capability. Teams are not required to coordinate with other teams to deploy their service.
While microservices and DevOps are not synonymous, they are compatible. Smaller services can be deployed more easily and independently. Smaller services also have clear ownership, which is aligned with DevOps principles around team accountability.
Benefits of DevOps
Speed
The DevOps model enables the development team and the operations team to release the software faster and be able to respond to market changes in a shorter time frame, which ensures higher quality. The team can build, test, automate, and deliver software effectively by following the practice of continuous delivery.
Improved Collaboration
The DevOps Model promotes a teamwork approach between the developers and operations team. There is a significant improvement in efficiency and less workload when these two teams work together and share responsibilities and workflows. This decreases the time spent on coding the code designed to be run in the environment.
Reliability
Key practices like continuous monitoring and continuous integration help ensure the quality of the application updates and infrastructure quality, while providing a hassle-free experience to users. Monitoring and logging keep you informed about the application performance in real time.
Scale
With significant benefits in efficiency, DevOps can assist in managing the infrastructure and development process at scale as code is automatically developed, tested, and deployed.
Security
Organisations can achieve faster delivery of software and have visibility, control or compliance in DevOps. Teams can automate repetitive tasks, standardise processes, and reliably deploy applications and maintain governance in multiple environments with the help of automation, infrastructure as code, and standardised processes.
DevOps Tools: The Core Toolchain
DevOps tools implement the practices described above. No single tool defines a DevOps setup; what matters is how the tools connect into a coherent pipeline. The categories below cover the full DevOps toolchain:
The best DevOps tool is the one that your team uses on a regular basis. The consistency and integration are more important than individual feature sets. A well-connected toolchain with fewer tools will generally yield better results than a fragmented tool chain with the 'best' tool in each category.
What Does a DevOps Engineer Do?
A DevOps engineer works at the intersection of development and operations. Core responsibilities include:
Building and maintaining CI/CD pipelines
Managing cloud infrastructure, often using IaC tools like Terraform
Writing automation scripts for deployment, testing, and configuration management
Setting up, monitoring, and alerting the systems for building and running;
Assisting teams in configuring their environment.
How to Adopt DevOps
There is no right or wrong approach to DevOps. There is a DevOps maturity model that can help: it's a continuum of practices moving from ad hoc to fully automated, continually improving delivery. Most teams do not need to reach the highest level immediately. The goal is incremental and sustainable improvement.
DevOps Culture First
One of the most common mistakes that teams make is when they jump straight into using the tools for DevOps. Having a new CI/CD platform won't solve the problem if dev and ops do not communicate. The first step in the DevOps culture is for the Dev and Ops team together to achieve common goals.
Agile
Agile Methodologies are highly used in the software industry because they allow teams to be flexible, well-structured, and adapt to changes. DevOps is a cultural shift that fosters collaboration between those who build and maintain software. When used together, agile and DevOps result in high efficiency and reliability.
Start your DevOps Journey
From establishing the first CI/CD pipeline, restructuring teams, to the development of a complete internal developer platform, Alt Digital Technologies supports engineering teams in adopting DevOps in a sustainable way
We begin by looking at the pain points in your process, and then developing a blueprint that addresses the most critical pain points and resolving those first. We do not prescribe a specific tool stack or impose a template. We work with what your team already knows and layer in the practices that will have the most impact.
DevOps Is a Journey, Not a Destination
Ask any team that has been successful in implementing DevOps well, and you'll get the same answer: DevOps was more difficult than expected, more cultural than technical, and the benefits are worth it.
There's no end state for the DevOps lifecycle. Teams practicing devOps for a decade also look to maximize their pipeline, work on monitoring, and find faster and safer ways to ship software!
Start with the problem that is destroying most value within your team. Fix it. Measure the improvement. Embrace that momentum and then move on to the next. Adopting DevOps for solving real problems and by real outcomes is much more sustainable than adopting DevOps because of a mandate to introduce a framework.
Looking to get started on a DevOps practice that really works? Alt Digital Technologies is here to help. Contact us today!
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