Challenges for future production/manufacturing.- Competencies for future production.- Learning in production, learning for production.- Historical development, terminology, and definition of learning factories.- The variety of learning factory concepts.- The life cycle of learning in learning factories for competency development.- Overview on existing learning factory application scenarios.- Overview on the content of existing learning factories.- Overview on potentials and limitations of existing learning factory concept variations.- Projects and groups related to learning factories.- Best practice examples.- Conclusion and outlook.