Improving teaching in higher education is a concern for universities worldwide. This study explored academics' developmental processes in teaching using episodic interviews and teaching portfolios. Eight academics in the context of teaching development reported changes in their teaching and change triggers. Thematic analyses revealed seven areas of change: participants most frequently reported changes in concepts about teaching, their teaching selves and teaching strategies. Triggers of change clustered into eight categories with teaching practices, teaching courses and metacognition reported most frequently. Analysing relations among areas and triggers of change indicated complex dynamics in academics' developmental processes in teaching. This suggests that teaching development should incorporate multiple change triggers to facilitate academics' development in teaching effectively.