Canary deployment is a strategy in software development that involves releasing new code to a small subset of users before a full rollout, allowing teams to monitor for bugs or performance issues in a controlled environment. This approach, which requires vigilant monitoring and the ability to swiftly revert changes, helps ensure a bug-free user experience by catching issues early. It necessitates a robust CI/CD pipeline to facilitate quick rollbacks and improve DevOps processes, ultimately minimizing downtime and user impact. Although maintaining two production environments can increase costs and complexity, the benefits of limiting exposure to potentially harmful changes and the ability to conduct A/B tests make it a valuable strategy. Tools like Earthly can manage the complexities of this deployment model by automating and containerizing builds, ensuring consistent and reliable results across different languages and infrastructures.