The study explores the impact of electronic word-of-mouth (e-WOM) on the decisionmaking process of registering for the AIESEC 2021 program. Conducted using a quantitative survey method, the research applies marketing communication theory to understand the influence of e-WOM on consumer behavior. Surveying 75 registrants from the UPN "Veteran" Yogyakarta class of 2021, the findings reveal a significant and robust positive correlation (0.797) between e-WOM and registration decisions, as confirmed by the Product Moment Correlation Test. Additionally, the statistical significance of this relationship is supported by the t Test (p < 0.05), with the F Test indicating that eWOM contributes significantly to decisionmaking, accounting for 62.9% of the variance. However, 37.1% of decisionmaking factors remain unexplored. These results highlight the pivotal role of e-WOM in shaping consumer decisions, particularly in the context of registering for programs such as JOIN AIESEC 2021. Understanding and leveraging e-WOM can thus be crucial for organizations seeking to enhance their marketing strategies and attract participants to their programs