Prefect is a modern workflow orchestration platform for building and managing data pipelines and ETL (Extract-Transform-Load) workflows. Developers write Python code using Prefect's Flows (workflows) and Tasks (individual steps), and Prefect handles scheduling, monitoring, retries, and error handling automatically. Prefect is designed to be simple and Pythonic. Instead of YAML-based DAGs (like Airflow), Prefect uses pure Python with decorators (@flow, @task), making it intuitive for Python developers. It includes cloud-hosted Prefect Cloud and self-hosted options (Prefect Server/Orion).