The book attempts to cover almost all the currently available advances of information technology and its use in library automation. The book would be useful for working librarians and library professionals in refreshing/upgrading their knowledge about the uses of advanced information technology tools in library. For students, it would help in filling the gap between LIS school curriculum and the current requirements of IT skills/expertise needed in getting good placements. It is expected that LIS students would extensively use this book while appearing for SET/NET exams. While reading the book, readers will get a feel of encyclopedic nature covering all the latest information technology tools available at the international level and their use in library automation. Topics such as using internet in library management, internet security, developing a digital library, metadata, data-mining and data warehousing techniques, electronic security systems for a library, management of e-resources, using web 2.0 technology tools in library, open access resources, semantic web, e-publishing, cloud computing, big data, BIBFRAME, and the concept of green library have been discussed in the book in detail. It is hoped that the present book would act as a guide and would certainly inspire librarians in planning, modernizing, and reinventing their libraries in the light of future technologies.