This study aims to analyze the effect of trust, ease of use and quality of information on purchasing decisions at Lazada. The subjects in this study were students of Faculty of Economics and Business Muhammadiyah University of Yogyakarta, who had made purchases in the last six months at Lazada. This research was conducted with a total sample of one hundred and ten respondents. The sampling technique uses a nonprobability sampling type with a purposive sampling method. The analysis technique used in this study is multiple linear regression. The results of this study indicate that trust, ease of use and quality of information have a significant positive effect simultaneously on purchasing decisions, trust has a positive but not significant effect on purchasing decisions, ease of use has a significant positive effect on purchasing decisions, quality of information has a significant positive effect on purchasing decisions.