Tracer study is a study that traces graduates about their work in the world of work and society. The results of the tracer study describe the quality of higher education and are used as feedback to improve the quality of education. However, the tracer study encountered various obstacles due to the presence of graduates who spread across various agencies and regions. Therefore, a tracer study system is needed that can minimize these obstacles. In this study, a web-based tracer study conducted at UIN SAIZU will be studied with a waterfall model. The method used in this research is field research. Data collection techniques were carried out by observation, in-depth interviews with graduate informants and graduate users, documentation, and training. The data analysis technique used the Miles and Huberman method with the stages of data reduction, data presentation, and verification. The results of this study found that the tracer study using the web-based waterfall model became more effective and efficient. The information collected is systematic and tiered with real time, structured, and integrated data. Other results are the views of graduates who express their satisfaction with the implementation of postgraduate education and services at UIN SAIZU and the satisfaction of graduate users on the performance of UIN SAIZU graduates.