For a long time, development and operations worked on opposite sides. Developers wanted to ship new features fast. Infrastructure teams wanted stability and avoided change. The result was rare, long and incident-prone deployments. Understanding what is devops means understanding how the most effective technology companies solved that conflict.
What is DevOps
DevOps combines Development and Operations. More than a job title or a tool, it is a culture of collaboration supported by automation practices. The goal is to deliver software frequently, with quality and security.
Instead of "throwing code over the wall" to another team, the same team owns the full cycle: planning, building, testing, releasing and monitoring.
The pillars of DevOps culture
A widely used model to describe the culture is CALMS:
- Culture: shared ownership and blameless analysis of failures.
- Automation: everything repetitive should be automated.
- Lean: small, frequent deliveries with less waste.
- Measurement: decisions based on metrics rather than opinions.
- Sharing: knowledge, tools and lessons flow between teams.
Core practices
Continuous integration (CI)
Every change pushed to the repository automatically triggers a build and tests. As a result, problems surface in minutes rather than weeks later.
Continuous delivery and deployment (CD)
Approved code moves automatically to staging and then to production. Deployments stop being tense events and become routine.
Infrastructure as code (IaC)
Servers, networks and databases are described in versioned files using tools such as Terraform and Ansible. This way, an entire environment can be recreated identically in minutes.
Monitoring and observability
Logs, metrics and distributed tracing show how the system behaves in real time. In addition, alerts notify the team before customers notice a problem.
Built-in security (DevSecOps)
Vulnerability scans of dependencies, images and code enter the pipeline from the start instead of being left to the end of the project.
Popular tools
- Version control: Git, GitHub, GitLab and Bitbucket.
- CI/CD: GitHub Actions, GitLab CI, Jenkins and Deployer.
- Containers and orchestration: Docker and Kubernetes.
- Infrastructure as code: Terraform, Pulumi and Ansible.
- Observability: Prometheus, Grafana, Sentry and Datadog.
How to measure progress
The DORA metrics, based on years of research with thousands of companies, are the most widely used reference:
- Deployment frequency: how often the team ships to production.
- Lead time for changes: time from commit to code running in production.
- Change failure rate: the percentage of deployments that cause incidents.
- Time to restore: how long it takes to recover from a failure.
High-performing teams deploy several times a day and recover from failures in under an hour.
How to get started
- Put all code, including scripts and configuration, under version control.
- Automate builds and tests on every commit.
- Automate deployment to a staging environment.
- Add basic monitoring and alerts in production.
- Shrink release size and increase frequency gradually.
Frequently asked questions
Is DevOps a job title?
The market uses the term "DevOps engineer", but DevOps is essentially a way of working. Without cultural change, hiring a specialist will not solve the problem.
Do small companies need DevOps?
Yes. A simple pipeline with automated tests and deployments already reduces errors and frees up team time, regardless of company size.
Conclusion
Knowing what DevOps is goes beyond knowing tools. It means embracing collaboration, automation and continuous measurement to ship software faster with fewer incidents. If your company wants to automate testing, deployments and infrastructure, WDS Developer can build that pipeline with you.
