In recent decades, Sub-Saharan Africa (SSA) has experienced rapid advances in digitalization, with unprecedented growth in internet penetration. This paper investigates the impact of internet penetration in SSA on real GDP growth, productivity, and sector output and employment. The analysis treats the arrival of submarine cables to the region as a natural experiment to estimate the impacts of internet penetration. The findings suggest that higher internet penetration increases real per capita GDP growth and productivity, and impacts the composition of both output and employment, with an increasing share from the services sector.