In the context of modern software development, trunk-based and feature-based (GitFlow) development strategies offer distinct approaches, each with unique advantages and challenges that impact Continuous Integration and Continuous Deployment (CI/CD) practices. Feature-based development involves creating long-lived branches for new features, allowing developers to work in isolation, which is beneficial for managing multiple software versions but can lead to complex merges and outdated branches if not regularly integrated. In contrast, trunk-based development promotes frequent integration into a single "trunk" branch, aligning well with CI/CD by ensuring rapid error detection and a consistent, deployable codebase, though it requires disciplined integration and robust automated testing to prevent instability. Feature flags complement trunk-based development by allowing features to be toggled on or off without code changes, facilitating safe deployments and incremental updates. The choice between these strategies should consider factors such as project requirements, team size, experience levels, and desired release frequency, with trunk-based development favoring rapid iterations and GitFlow offering structured management for larger or more diverse teams. Understanding these methodologies enables teams to optimize their development and delivery processes for maximum efficiency and quality.