In this extended abstract, we summarize our paper published in the ACM Transactions on Autonomous and Adaptive Systems [We23]. To gain insight into the application of self-adaptation in practice, we performed a large-scale survey and received 184 responses from practitioners spread over 21 countries. Based on the analysis, we provide an overview of state-of-the-practice in the application of self-adaptation. From that, we derive insights for researchers to check their current research with industrial needs, and for practitioners to compare their current practice in applying self-adaptation.