<p>This research’s theme is to examine the mediating role of digital innovation and internet consumer finance from a multidimensional perspective, investigating the influence of psychological factors on consumer online buying behavior. Using a survey design, data were collected from 943 participants via an online questionnaire on the Qualtrics platform (e.g., via Google Surveys, Facebook, WeChat, and email), employing a purposive sampling method. A quantitative research method was performed utilizing PLS-SEM with importance-performance map analysis (IPMA) applied for data analysis. Findings provide significant theoretical and empirical support for, and are consistent with, the research objective. The results show that motivation (MOTV) and trust (TRST) significantly and positively influence consumer online buying behavior (COBB). Specifically, motivation drives the development of digital innovation and internet consumer finance, while trust critically influences both digital innovation and consumer behavior. Digital innovation (DIGINOV) and internet consumer finance (ICF serve as mediators, with motivation strongly driving digital innovation and trust playing a critical role in both mediators. Among the key determinants, digital innovation exerts a greater influence on consumer behavior than Internet consumer finance. On the other hand, perceived risk was found to have a detrimental effect on both online purchasing behavior and DIGINOV, although this effect was not statistically significant. Governments, stakeholders, and policymakers should prioritize digital business sustainability to assist internet users in making educated financial decisions and engaging in safe online shopping. This study is confined to a single region; subsequent research should investigate digital marketplaces throughout Asian nations to have a more comprehensive insight into online customer purchasing behavior.</p>