As internet software becomes more complex and autonomous, Temporal Workflows offer a solution to the challenges posed by asynchronous, long-running, multi-process workflows, particularly concerning Workflow Versioning. Worker Versioning, a new feature by Temporal, addresses version compatibility issues by ensuring each Workflow operates on a single version of code, known as Workflow Pinning. However, effective deployment strategies are essential to manage this, with rainbow deploys emerging as a robust solution for high-availability workflows, surpassing traditional rolling and blue-green deployments. Temporal's Worker Versioning allows developers to maintain flexibility and safety in deployments, offering features like instant rollbacks and pre-deployment testing, and supports both open-source and cloud environments. The system is under continuous development, with plans for general availability and additional features by 2025, and a focus on ease of adoption, reliability, and deployment safety.