CI/CD practices are explained from basics to modern PR environments (preview deployments). Shared staging environments create coordination bottlenecks when multiple developers work in parallel — PR environments solve this by giving each pull request its own isolated deployment with separate services, databases, and URLs, created and destroyed automatically. Railway is presented as a platform that implements this pattern natively with a single toggle, usage-based billing, rollback support, secrets management, and multi-service project support. Limitations of PR environments are also covered: they're less suited for load testing, production-scale data migrations, or integrations with non-duplicable external services.
Table of contents
Table of ContentsWhat is CI/CD?How CI/CD pipelines are typically assembledThe coordination problem with a shared staging environmentWhat are PR environments?When PR environments are less effectiveCriteria for evaluating CI/CD platformsHow Railway implements CI/CD with PR environments?Migrating from manual deployments to CI/CD with PR environmentsConclusionSort: