Prefect

Prefect is a workflow orchestration company headquartered in Washington, DC, founded in 2018 by Jeremiah Lowin. The company builds tooling for data engineers and developers to define, schedule, and observe data pipelines and automated workflows, with an open-source library at its core and a managed cloud platform layered on top.

Prefect's primary product is its Python-based orchestration framework, which allows teams to convert existing Python functions into observable, retriable workflows. The company offers Prefect Cloud, a hosted platform for managing workflow runs, and has more recently introduced Prefect Horizon, aimed at supporting AI application workflows. The open-source project has accumulated significant adoption on GitHub and is used across data engineering, machine learning, and analytics teams.

Prefect raised a $32.9M Series B round, with prior funding from investors including Andreessen Horowitz and others. The company operates with a remote-first team and competes in the workflow orchestration space alongside products such as Apache Airflow, Dagster, and Astronomer.