Author: Dewan Mahmud, Software Engineer
From a business perspective, CI/CD is valuable because it reduces risk during releases. Manual deployments depend too much on memory and attention, which can lead to outages. CI/CD creates a reliable, repeatable process that helps teams ship updates faster while maintaining product stability and trust.
Continuous Integration (CI) is the process of automatically testing and building code every time changes are pushed to the repository. Its purpose is to detect errors early.
Continuous Deployment (CD) begins after CI succeeds and automatically deploys the verified code to production or staging. CI ensures the code is safe, and CD ensures it is delivered.
For a small startup already using GitHub, GitHub Actions is the most practical choice.
Reasons:
- It integrates directly with GitHub, eliminating the need for external CI tools.
- The free tier offers enough build minutes for small teams.
- Prebuilt actions reduce setup time and simplify automation.
This makes GitHub Actions both cost-effective and easy to adopt.
I learned about Jenkins from one of my classmates, which helped me understand why some teams still rely on it. Jenkins is especially useful when a project requires deep customization, such as legacy systems, on-premise servers, or highly specific build steps. In these cases, Jenkins’ flexibility and plugin ecosystem can be a major advantage despite the higher maintenance effort.
In my own projects, I often deployed changes manually by running builds and restarting services. This process was repetitive and easy to make mistakes in. A CI/CD pipeline could automate testing and deployment, making releases faster, safer, and more consistent.