AT&T's 5G network currently covers 80 million people in the United States.
Companies would be able to use edge computing to process huge amounts of data generated from the internet of things (IoT) gadgets - where devices and appliances are controlled over networks.
Gartner predicts that 75% of all data generated by enterprises will be processed outside the traditional cloud by 2025. "Our co-innovation with AT&T aims to bring a multitude of 5G and Edge Computing solutions to address a diversity of use cases, driving real business value in industries like retail, manufacturing, gaming and more," Google Cloud Chief Executive Thomas Kurian said in a statement.