Which Google project used high-altitude balloons to deliver internet access?

Project Loon was the Google project that used high-altitude balloons to deliver internet access.

Google introduced Project Loon in 2013 as an effort to provide connectivity through balloons operating in the stratosphere. The balloons carried communications equipment and were designed to relay internet signals to ground stations, partner networks, and user terminals.

The project aimed to reach rural and remote areas where conventional terrestrial infrastructure was difficult or expensive to build. Its tests included deployments in places such as New Zealand, Sri Lanka, and Kenya.

Alphabet’s Loon subsidiary announced that it would shut down in 2021 because the business had not found a path to long-term sustainability. Project Wing, by contrast, focused on drone delivery rather than balloon-based connectivity.