In the global competitive business world, utilization of modern and innovative technological practices in business transactions is inevitable. E-commerce is a paradigm shift to connect customers electronically in the present business system. E-commerce covers electronic transmission of information, monetary payments and physical delivery of products. It is a pertinent time to analyse the future potentiality of e-commerce and the perception of online buyers who use this platform. A study was conducted with the following objectives: to describe the perception of online buyers, to make online buyers' Futuristic Perspective Analysis (FPA) of ecommerce and to study factors influencing sustainability of e-commerce in the future. The data were collected from primary and secondary sources. A primary survey was conducted through structured questionnaire administered on select online buyers in Karaikal, Union Territory of Puducherry, India. The collected data were analysed with multivariate statistical tools like factor analysis and multiple regression analysis with SPSS. The findings were presented with suitable suggestions to know the futuristic 48 perspectives of online buyers and the sustainability of ecommerce.