This study aimed to design and develop a website for the Student and Alumni Development Institute (LPKA) of Universitas Muhammadiyah Tasikmalaya as a digital service platform that integrates student and alumni activities, improves data management, and facilitates institutional communication. The project adopted the Research and Development (R&D) approach combined with the ADDIE model, consisting of analysis, design, development, implementation, and evaluation stages. The website was developed using WordPress due to its flexibility, scalability, and accessibility, supported by various plugins and custom features to meet institutional needs. Functionality testing through the Black Box method confirmed that all features—such as activity publication, scholarship announcements, report uploads, and discussion forums—operated correctly. Validation by software experts (84%), institutional staff (91.5%), and students/alumni (87.3%) demonstrated a high level of usability and system reliability. These findings indicate that the LPKA website effectively improves service efficiency, enhances transparency, and fosters stronger engagement between the university, students, and alumni. The system also serves as an example of how CMS-based development can be applied to support digital transformation in higher education. Future enhancements should include the integration of academic databases, the development of automated notification features, and the implementation of analytics tools for real-time monitoring to ensure long-term adaptability and institutional sustainability.