Airbnb's Sitar platform manages dynamic configuration changes to avoid service restarts and enable swift responses. This platform is built upon four core elements: a developer-facing layer, a control plane, a data plane, and client components. The developer layer facilitates config creation and review, using a Git-based workflow for version control and collaboration. The control plane orchestrates change rollouts, ensuring schema validation, authorization, and staged releases. The data plane provides scalable storage and reliable distribution of configuration updates to service agents. Agents in each service fetch configs and cache them locally for fast access and resilience. Key design choices include Git-based workflows, staged rollouts, and separation of control and data planes. This architecture allows for safer, more predictable rollouts, giving teams more flexibility in managing configs. Incident mitigation is faster, with integrated observability tools for locating and resolving issues. The platform streamlines developer experience and continuously improves safety, observability, and usability. Airbnb is continuously enhancing Sitar, focusing on rollout strategies, testing, and incident response. This work is crucial for maintaining a robust, adaptable, and developer-friendly infrastructure.