The document discusses concepts related to smart cities including: 1) Examples of smart city initiatives in cities like Rio de Janeiro, Barcelona, New York, Amsterdam, and Copenhagen that involve partnerships between government, industry, and other organizations. 2) Hamburg's expansion of its new "City within a City" which includes urban living, mobility, leisure, workspaces, universities, smart homes, and a smart port through public-private partnerships and a focus on IoT, startups, and research. 3) The concept of smart citizens and platforms to support citizen health, urban planning, and refugee assistance.