From May 18 to 22, 2015, Florence will host the 24th International World Wide Web Conference (WWW 2015), the premier international forum to present and discuss progress in research, development, standards, and applications of the topics related to the Web. WWW 2015 will offer high quality technical activities, including research sessions, poster sessions, workshops, tutorials, demonstrations, an industry track, a developers track, panels, and a Ph.D. symposium.