What is DevOps?

DevOps: definition and origins

In the past, development and operations often worked separately: one side wrote the code, the other had to put it into production and keep it stable. This led to long release cycles and finger-pointing. The DevOps movement emerged around 2009 as a response to this problem.

DevOps is neither a single tool nor just a job title, but a combination of culture, ways of working, and technology. The goal is for one team to take joint responsibility for software from the idea all the way to operation.

How DevOps works in practice

At its core is a recurring cycle: plan, develop, test, deliver, operate, monitor—and plan again based on what was learned. As many steps as possible are automated so that changes go live in small, frequent increments with low risk.

A commonly used image is the infinity loop, a figure eight lying on its side: development and operations form two loops of a continuous cycle. Insights from operations—such as slow pages or recurring errors—feed directly into the next development round.

• CI/CD: automated testing and delivery of code
• Infrastructure as code: servers defined in configuration files, e.g., with Terraform or Ansible
• Containers such as Docker for identical environments from testing to production
• Monitoring and logging to detect errors early
• Blameless joint reviews of incidents

Benefits and limitations of DevOps

Companies benefit from faster updates, fewer outages caused by faulty releases, and shorter response times when problems occur. Because processes are automated and documented, operations depend less on the knowledge of individual people.

However, DevOps requires upfront investment in automation and a shift in how people work together. Tools alone change little if responsibilities remain unclear. For small projects, a lean version with automated deployment and monitoring is often enough.

• More frequent, smaller, and safer releases
• Fewer manual errors thanks to automation
• Faster detection and resolution of errors
• Adoption takes time and a cultural shift

Real-world example: DevOps for a web application

A mid-sized company runs a customer portal that has so far been updated every few months in an overnight maintenance window—with a lot of manual work and the nervousness that goes with it. After introducing a CI/CD pipeline, containerized environments, and monitoring, improvements go live in small steps. Automated tests catch errors early, and if problems occur, the previous version is quickly restored.

Nano Concepts sets up DevOps processes to match the size of the project—from automated deployment to monitoring and alerting—and supports your team through the transition.