This report provides an overview of the street lighting market and its role in smart city development. The market is growing globally due to regulatory policies that encourage energy efficiency, IoT convergence, LED price drops, and a new business model "as a service" in different industries. The concept of "smart poles" is also growing, with use cases ranging from basic LED replacement and remote control to more innovative services such as video surveillance, air quality monitoring, and connectivity. Public lighting infrastructure has three key features that make it a potential strategic asset for smart cities: capillarity, electrification, and connectivity. The report aims to analyze the main smart city services that can be developed using public lighting infrastructure and identify the main bottlenecks and roadblocks.