Ericsson has named Stockholm as the top-ranking city in the Networked Society City Index 2016, followed by London, Copenhagen, Singapore and Paris. The index measures the performance of 41 cities from around the world from two perspectives: sustainable urban development and ICT maturity. Stockholm is ranked number one in the sustainable urban development part of the index, closely followed by Copenhagen, Helsinki and Paris. London ranks top in the ICT part of the index, replacing Stockholm, which now ranks second before Singapore on third place. Cities that have noticeably moved up the Networked Society City Index 2016 ranking, compared with the 2014 index, include Barcelona, Istanbul and Jakarta. However, Hong Kong, Moscow and Dubai dropped in the ranking. In general, cities with low ICT maturity tend to mature faster than cities with higher ICT maturity, which indicates the presence of a catch-up effect.