The Austrian capital Vienna again tops the Smart City Index, Roland Berger's analysis of 153 cities around the world. Second in the ranking is another European city, London. On average, however, it's mainly Asian metropolises that demonstrate the most compelling Smart City strategies. Remarkably, 90 percent of the analyzed cities still do not have an integrated strategy. There is also a lot of work to do on implementation. Successful Smart Cities implement their strategy with the help of a central decision-making entity and pilot projects.

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