AT&T Inc will invest about US$10 billion in its global business solutions division, as it seeks to boost the unit that offers services such as wireless connectivity, cloud storage and security to companies, the wireless provider said on Sunday. NEW YORK: AT&T Inc will invest about US$10 billion in its global business solutions division, as it seeks to boost the unit that offers services such as wireless connectivity, cloud storage and security to companies, the wireless provider said on Sunday.