This article addresses the inconsistent conceptualization of expert interviews in information systems (IS) research by providing a structured framework for their rigorous execution and presentation. Through a thematic analysis of 28 method-relevant papers, key characteristics and good practices for executing expert interviews are identified. Additionally, 39 highly cited IS studies were reviewed to examine expert interview utilization in IS research and to identify good practices for presenting expert interview outcomes, which are further validated on nine digital transformation (DT) studies. Our findings highlight the adaptability and varied applications of expert interviews in IS research and offer recommendations to strengthen rigor in their preparation, execution, and presentation of outcomes. Theoretical and practical implications are provided to guide a more systematic and rigorous use of expert interviews in IS research.