Bamboo stages and jobs are core components of its build architecture, designed to organize and control the flow of CI tasks. A stage represents a major phase in the build plan, such as compile, test, or package, and stages run sequentially to ensure logical progression. Within each stage, jobs define the specific units of work and can run in parallel when agents are available, enabling faster build execution and improved resource utilization. Jobs contain tasks such as script execution, source checkout, testing, or artifact creation. By structuring pipelines into stages and jobs, teams gain clearer visibility, better control over execution order, and the flexibility to optimize performance through parallelization, ultimately supporting more efficient and maintainable CI workflows.