As the COVID-19 pandemic worsened in March, internet usage surged while real-world mobility plummeted. Web traffic increased up to 60% as people worked and learned from home, with spikes in video conferencing, streaming, and gaming. Mobile app downloads rose sharply for grocery delivery and food apps. In contrast, driving declined up to 70% as did mass transit and air travel. People largely stayed home, leading to an unprecedented shift from physical to virtual activities.