What is continuous delivery? Tools, pipelines, and how modern teams are implementing it

Continuous delivery (CD) is an engineering practice focused on keeping code changes in a deployable state through automated processes like build promotion, release workflows, and environment-specific configurations under version control. Distinct from continuous integration (CI), which automates the building and testing of code, CD ensures that tested code is packaged, tagged, and promoted through environments like staging and production without manual intervention. Challenges in implementing CD include testing bottlenecks, limited visibility, environment inconsistencies, and traceability issues. Various tools like Northflank, Jenkins, GitHub Actions, GitLab CI/CD, and Argo CD are employed to facilitate CD, each with different strengths depending on team needs and infrastructure. Northflank, for example, offers a unified platform that simplifies delivery by integrating CI/CD workflows, providing Git-based delivery with tagging and promotion, and managing preview and production environments side-by-side. Overall, continuous delivery requires careful orchestration and clear ownership boundaries to ensure that the deployment process is both efficient and reliable.