The book explains the new dimensions in libraries, like cloud computing, e-resources, ICT, institutional repository, library security, etc. in a lucid manner. It highlights the importance and effectiveness of the library system in the digital age. It aims to give an insight into new dimensions of libraries to the readers. For better understanding of the changing dimensions of library in the digital age, the book, containing twenty-four chapters, has been divided into six parts. First part explores cloud computing in libraries. The second part is focused exclusively on the concept of e-resources. The third part is focused on the concept of ICT. Effectiveness of library services largely depends upon the Information and Communication Technology (ICT). Institutional Repository has been the area of core concern for the fourth part. The fifth part encompasses the chapters relating to "Library Security". The last segment (sixth part) of the book comprises the miscellaneous topics relevant to the main theme of the book.