<![CDATA[Usability is a critical factor in digital commerce platforms because it influences users’ ability to find product information and complete transactions efficiently. This study evaluates the usability of Oisrum, an MSME digital commerce platform, and identifies priorities for interface improvement based on actual user-testing results. The evaluation involved 10 participants performing six predefined tasks covering product discovery, access to product information, product selection, cart interaction, checkout, and access to platform information. The results showed an overall task completion rate of 93.33%, with 56 successful task executions out of 60, and a System Usability Scale (SUS) score of 83.0. Task-level analysis identified access to product information (T2), with a completion rate of 90%, and checkout completion (T5), with a completion rate of 80% and an average completion time of 148 seconds, as areas requiring further attention. These findings demonstrate that overall usability scores should be interpreted alongside task-level performance to identify specific interaction problems. A weighted objective-function approach may complement this evaluation by supporting the prioritization of interface improvement alternatives based on measurable usability indicators. However, the effectiveness of specific improvements must be established through documented implementation and follow-up user testing. This study provides an empirical basis for identifying usability issues and prioritizing further improvements to the Oisrum digital commerce platform.]]>
