Background: Research in the field of writing pedagogy within higher education has extensively examined the significant roles that feedback plays in the development of students’ writing skills. However, comparative studies that investigate the efficacy of teacher-provided written and oral feedback, both with and without the aid of technology, remain scarce. Such research is crucial for understanding the impact of different feedback modalities on student learning and could inform best practices in educational settings.Objectives: This research, which was part of a larger study, specifically examined the impact of teacher-provided feedback—both written and oral—on the development of students’ writing skills. We conducted this evaluation within the framework of the process-genre approach, comparing the outcomes of technology-facilitated feedback with traditional methods of delivery. The study sought to determine which forms of feedback, technology-mediated or otherwise, are the most effective in enhancing students’ writing proficiency.Method: It used a sequential explanatory design, selecting 28 first-year students from a veterinary international programme through purposive sampling. The participants were divided into control and experimental groups. Data collection methods included written and oral feedback surveys, pre-test and post-test evaluations, formative essay assessments, and participant interviews.Results: The experimental group, receiving technology-mediated teacher feedback through writeabout.com, demonstrated significantly better writing skills compared to the control group with a conventional lesson plan. Students found the technology-mediated written feedback efficient and precise, but faced language proficiency challenges and sought more personalised interaction. There was a strong positive correlation between this feedback and various aspects of writing achievement, including task response, coherence, lexical resources, and grammatical accuracy.Conclusion: The research highlights the significance of a balanced feedback provision strategy that accommodates the varied preferences of students.Contribution: It adds to the wider conversation on efficacious writing pedagogy within Thai Higher Education, spotlighting the beneficial effects of technology-mediated feedback as part of the process-genre approach.