In particular small- and medium-sized enterprises (SMEs), which lag in productivity relative to larger firms and governments, lag in their adoption and use. For example, while almost 95% of enterprises in the OECD had a broadband connection in 2014, 40% of enterprises with 250 or more employees used cloud computing, compared to less than a quarter of SMEs. This is a concern because evidence suggests that a slowdown in the diffusion of technologies and knowledge from frontier to lagging firms may be an important source of the current aggregate productivity slowdown.