摘要:The aims of the present research are: 1) to know that product buying decision possibly occurs,2) to know how product buying decision occurs on Lazada e-commerce’s customers, 3) howprevious buyers’ comments can increase product buying decision on Lazada e-commerce.This research utilizes qualitative research method. Qualitative research is a research thatinvestigates other researches and makes assumption or discussion result so that other analysisresults can be made in order to widen idea and opinion. Research result shows that product whichhas many ratings and reviews will trigger other buyers to purchase or get that product.The conclusion is that product buying decision may occur because there are some processes beforemaking decision which are: looking for recognition and searching for problems, knowing the needs,collecting information, evaluating alternative, evaluating after buying. In those stages, buyingdecision on Lazada e-commerce is supported by price, promotion, service, and brand.