The rapid advancement of Information Technology (IT) has fundamentally transformed library user services, shifting them from traditional, print-based, and location-bound systems to dynamic, digital, and user-centric environments. This paper explores the comprehensive impact of IT on library services, emphasizing how technological innovations have enhanced accessibility, efficiency, and user engagement. Key technologies such as Online Public Access Catalogues (OPACs), integrated library management systems, digital libraries, institutional repositories, cloud computing, and mobile applications have revolutionized the way libraries operate and deliver services.

The study examines the evolution of traditional services—including circulation, reference, Current Awareness Services (CAS), and Selective Dissemination of Information (SDI)—into automated and digital formats. It also highlights the emergence of virtual reference services, resource sharing networks, and personalized information delivery systems enabled by data analytics and artificial intelligence