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Each case study focuses on a recurring aspect of incubation, supported by examples drawn from verified ASF reports and public mailing list discussions. Together, they form a record of how ASF values, openness, consensus, independence, and diversity emerge in real project life.

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Overview of the Five Case Study Areas

Case Study AreaWhat It ExploresExample Projects (historical)
Community Growth and DiversityHow small or company-originated teams became open, multi-organisation communities through transparent communication and shared decision-making.Pinot, Superset, Airflow, ECharts, APISIX
Corporate Origins and IndependenceHow projects with strong corporate roots adapted to ASF governance and built vendor-neutral, community-led decision processes.Iceberg, Kafka, Cassandra, Pulsar, Airflow
Complex or Extended IncubationHow technically large or long-running podlings maintained engagement and transparency through migration, IP clearance, or major refactoring.NetBeans, IoTDB, Trafodion
Lifecycle and TransitionHow projects approached graduation, withdrawal, or retirement openly and responsibly, treating each outcome as part of healthy project life.MXNet, Mesos, Wave, Blur, Zipkin
Global and Cross-Language CollaborationHow geographically distributed or multilingual communities built inclusive participation while maintaining ASF’s transparency norms.ECharts, IoTDB, Kylin, APISIX

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How to Use These Case Studies

  • Mentors can use them to recognise familiar patterns, anticipate challenges, and guide discussions with their podlings.
  • PPMC members can compare their community’s progress to past examples and identify areas to strengthen.
  • IPMC members can reference them when reviewing reports or graduation readiness, ensuring oversight remains consistent and constructive.

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  • brief context and purpose
  • 3–5 verified examples drawn from ASF history
  • discussion points and “reference actions” for mentors and PPMCs
  • neutral summaries that show how ASF values appear in practice

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A Shared Record of Experience

This case study summarises information from ASF public mailing lists, podling reports, and status pages. It was written from the perspective of observers outside the individual podling communities. Community members may hold differing views on events or timelines, and minor simplifications may be made for clarity or training purposes. It includes historical information drawn from public ASF sources and does not represent the current state of any project mentioned. This content may contain errors or omissions due to AI-generated elements. However, the material has been reviewed and verified by a human for accuracy. These factors do not reduce its value as a reference for understanding patterns of incubation and global collaboration.