Recently, I have encountered many librarians who are worried about libraries becoming bookless (https://www.linkedin.com/pulse/would-you-work-bookless-library-lorette-weldon) institutions. Many have forgotten that libraries are primary centers or repositories for collections of books and any other sources of data to be made available at no cost to the general public.
Over 70 years ago, Vannevar Bush (http://www.theatlantic.com/magazine/archive/1945/07/as-we-may-think/303881/) proposed “memex”. This was to be a device about the size of a desk which could store all the books, records, and communications, of an organization, on some type of media from which this data could be retrieved. Dr. Bush had no means to realize his suggestion. However, the suggestion was a theoretical proposal for what has become the hypertext system and digitization of data for today’s storage means. Hence, I view the World Wide Web, the cloud, and all other digitized storage means as adjuncts to the modern library.