For residents of European cities—with their snarled traffic, drafty old buildings, creaking public services and gray winters—it's easy to see the appeal of moving to a brand-new, high-tech metropolis.

Smart city innovation is accelerating—so fast, in fact, that distant visions of the future are now becoming present-day realities, transforming how communities live, work and play. At the heart of ...

More than half of the world’s population currently lives in cities and this share is expected to rise to nearly 70% by 2050. It’s no wonder “smart cities” have become a buzzword in urban planning, ...