Information Technology (IT) plays a vital role in todays global knowledge economy. It has proved to be a great boon for the modern society. The impact of information technology is enormous and global in its magnitude direction, pervasiveness and usefulness. IT has become an integral part of all aspects of the library management. IT has transformed the role of libraries creating new challenges and opportunities. IT has profoundly affected all the library operations, information resources, information services, staff skills requirement and users expectations. IT has virtually unlimited potential for variety of useful applications in libraries as it significantly contributes to improved quality, increased productivity, more efficient operations, better resource sharing and more effective services to users. The implementation of new technologies in library is no longer a matter of choice but a matter of survival in an era of rapidly and constantly changing technology and global knowledge society. Today, the success of a modern library is increasingly dependent on the most effective utilisation and strategic management of innovative digital technologies in libraries. This book provides a brief overview of different components of information technology. It covers excellent review of the global as well as national scenario of the current trends in information technology applications in libraries. The book presents detailed information about the impact of information technology on library operations, information services, staff and end users. The key factors in strategic technologic planning, strategies for managing technological change in libraries and IT skills required for library professionals in managing modern libraries in digital environment are also discussed in detail. It is hoped that this book will be of great benefit to the policy decision makers, practising library managers, working library professionals at all levels, university teachers, research scholars and students of library and information science, library software development firms and all other library professionals involved in planning, implementation and management of modern information technologies in libraries.