The HotWeb'2015 workshop is scheduled on November 12-13, 2015 and will be held at Washington, D.C., USA. HotWeb is a forum that brings together researchers and practitioners interested in the design, implementation, and evaluation of Internet systems and applications. Sponsored by the IEEE Computer Society and by IEEE-CS Technical Committee on the Internet, the workshop seeks to act as a conduit for the presentation of novel approaches used in support of performance, scalability, and security of Internet systems and applications, including Web searching and indexing, content distribution and delivery networks, Web services, online social networks, Web of Things, mobile Web, and edge computing.