AWS Step Functions is a visual workflow service that helps developers use AWS services to build distributed applications, automate processes, orchestrate microservices, and create data and machine learning (ML) pipelines. Start building quickly with Workflow Studio, a simple drag-and-drop interface for expressing complex business logic. Automate workflows across over 220 AWS services without maintaining code. Visualize and develop resilient workflows for event-driven architectures. Efficiently scale on demand to meet the reliability and volume needs of your application.