Prefect acquires Dagster, uniting two leading orchestrators as agentic workflows reshape automation
Prefect, the AI and data automation software company, has agreed to acquire Dagster Labs, bringing together the two most widely adopted successors to Apache Airflow. The transaction consolidates a category where both companies emerged as Airflow challengers nearly a decade ago, with Dagster focusing on asset-based orchestration and Prefect on dynamic workflow execution. Terms were not disclosed, but both products will maintain their existing pricing, roadmaps, and open-source communities, with roughly 40 Dagster employees joining Prefect.
The combined company now has three major open-source product families: Prefect (runtime execution), Dagster (asset-based orchestration), and FastMCP (AI agent governance). FastMCP has been downloaded over 92 million times in the past month and earned 26,000 GitHub stars, serving as the standard way to connect AI agents to external tools and data. Anthropic adopted FastMCP as the official Model Context Protocol (MCP) SDK after its late-2024 launch.
The acquisition reflects how the orchestration problem has evolved beyond data pipelines into agentic workflows. Dagster's asset model—which declares what data should exist and validates it—now pairs with Prefect's strengths in dynamic, failure-resilient execution and FastMCP's governance layer for AI agent access. As Jeremiah Lowin, Prefect's CEO, put it: teams can now automate agentic workflows the same way they've always automated pipelines—defining what it should produce, running it, and keeping it under control.
For architecture leads, this matters because the open-source competitors that shaped the post-Airflow landscape are now unified. Orchestration will increasingly be bundled with agent governance, and FastMCP's adoption by Anthropic signals a structural shift in how AI systems connect to external systems. Teams evaluating orchestration infrastructure should watch how Prefect scales governance across both data and agentic workloads.