In my opinion, the most important factor when selecting a Library Management System (LMS) is ease of use, because both library staff and users interact with the system regularly for tasks such as catalog searching, book circulation, membership management, and accessing digital resources. A user-friendly system reduces training time, minimizes operational errors, and improves efficiency by allowing staff to manage inventory and services more effectively. For users, an intuitive interface enhances the experience of finding, borrowing, and accessing materials quickly and conveniently. While automation improves productivity, scalability supports future growth, digital resource support expands accessibility, and cost-effectiveness helps with budgeting, these benefits are most impactful when the system is easy to navigate and adopt. Therefore, ease of use directly influences overall library performance by improving staff productivity, user satisfaction, and service quality.