PurposeInternational assignments are not just opportunities for career advancement but also for personal growth and exploration. This paper, by capturing the changing expectations and success parameters across the assignments, is a timely and relevant resource for individuals navigating the complexities of international careers. In addition, the paper aims to help organizations build policies for enabling successful assignments for international assignees and managers.Design/methodology/approachOur research took a unique two-pronged approach to understanding the success parameters of international assignments. We first interviewed 16 managers to understand the success parameters they set for expatriates. Then, we interviewed 19 international assignees to explore their choices and how they defined success in their international experiences.FindingsOur comprehensive research, based on 35 interviews with international assignees and their supervisors, reveals that an assignment's success evolves with different stages of the assignment, over the assignments that the assignees choose, and varies according to the intent of the mobility.Originality/valueThis paper makes a significant contribution to the field of cross-cultural management and international assignments. By discussing the evolving definition of success across various international assignments, it not only provides valuable insights for expatriates in their international careers but also to managers to build aligned policies and practices.