Foster children are considered particularly vulnerable due to the burdens and experiences they often encounter within their families. Placement in a foster family presents challenges and opportunities for all involved, but also risks and potential disruptions. Successful foster relationships and the associated transition into adulthood are milestones on the path to an independent and self-determined life. In a study from the perspective of care leavers and experts, Rosemarie Raslan-Allgäuer examines the factors that contribute to success and develops practical recommendations for social work.