Windmill is an internal developer platform and workflow orchestration engine designed to automate complex business processes and data pipelines. It functions as a distributed serverless runner that executes multi-language scripts within isolated, containerized environments, allowing teams to chain discrete tasks into directed acyclic graphs.
The platform distinguishes itself through a Git-centric approach to infrastructure, where system state and workflow definitions are synchronized directly from version control. It features a metadata-driven input system that automatically generates user interfaces and validation logic from function signatures, enabling the rapid construction of data-centric internal applications and dashboards that interface directly with backend business logic.
Beyond core orchestration, the platform provides a comprehensive suite for managing the full lifecycle of automated tasks. This includes granular access control and secret management for secure operations, event-driven triggers for real-time system integration, and a distributed worker fleet that ensures horizontal scalability across diverse technical environments.