"German as a Foreign and Second Language Between Tradition and Innovation” - this was the motto of the 47th Annual Conference for German as a Foreign and Second Language, which was supposed to take place at the end of March 2020. This motto has already proven to be appropriate in several respects. On the one hand, due to the pandemic, the conference was cancelled shortly before it was scheduled to take place, with an alternative digital format being developed within a few weeks, which was considered quite innovative at the time. The conference hence became the first major online conference in German as a Foreign and Second Language. On the other hand, the present volume will – very traditionally – be the last one to appear in the series "Materialien Deutsch als Fremd- und Zweitsprache". It brings together selected contributions from the conference’s two practical forums and its four main sections: 1. Learner Language Analysis; 2. Professional, Educational and Academic Language: Claims, Requirements and Reality; 3. Professionalisation of Teachers and Digital Competencies; 4. Cultural Learning in DaF and DaZ Lessons. These research results, projects and didactic concepts discussed here address both more traditional questions of the field and innovative tendencies and developments.