Rhetoric plays an important role in helping information technology (IT) professionals communicate their ideas clearly and effectively. By employing rhetorical devices when speaking about technology topics, IT professionals can present logical and convincing arguments, and demonstrate their knowledge and expertise while engaging the audience and making complex technical concepts more accessible for non-experts. This study attempts to understand how IT students construct and develop persuasive arguments by analysing their use of rhetorical strategies in a sample of persuasive presentations delivered in the course "English for IT". Both corpus analysis and manual analysis were used to identify different types of rhetorical strategies students employed to influence their audiences' attitudes. The results show that IT students not only created a logical appeal which might be more natural for them but also employed a wide range of rhetorical strategies and devices to establish disciplinary credibility and create a more personal connection with their audience, thus maintaining an appropriate balance of logos, ethos and pathos. The study further recommends systematic and careful rhetorical analysis of ESP (English for specific purposes) students' spoken language across disciplines and the consequent adaption of learning materials and teaching methods to improve ESP students' rhetoric skills.