This course is systematically designed for learners aiming to obtain MOS 365 certification. Rather than limiting itself to exam-focused learning, it is designed to strengthen both certification preparation and practical application skills by focusing on functions frequently used in actual office environments. Through this course, students will learn the core areas of the MOS 365 exam, including Word, Excel, and PowerPoint, while naturally acquiring the main functions of each program and practical application cases. Since this course covers a wide range from basic document creation to advanced feature utilization, students can secure both certification and the document processing and data utilization skills necessary for job performance. Additionally, it is structured to help develop practical skills and improve exam adaptability through examples and problem-solving similar to the types that appear on actual exams. Therefore, this course will be of great help not only to learners preparing for MOS 365 certification, but also to office workers who want to develop efficient document work skills in office and administrative practice.