AutoGen is an open-source framework from Microsoft Research for building multi-agent AI applications in which agents act autonomously or work alongside people. Developers install it as Python packages (autogen-agentchat and extensions), and a no-code graphical interface, AutoGen Studio, is available as well. The code is released under the MIT licence. The project is in maintenance mode: it receives only bug fixes, security patches and documentation updates, and Microsoft points new projects to its successor, Microsoft Agent Framework, for which a migration guide exists.
AutoGen originates from Microsoft, a company headquartered in the United States, so the project is subject to US jurisdiction. It is a library rather than a hosted service: you run it yourself on infrastructure of your choice. Which data leaves your environment depends on the language-model providers and tools you connect. For a European organisation, the MIT licence allows inspection and forking of the code, but the maintenance status means that long-term plans should account for a move to a successor framework.