Advanced Info Service Public Co Ltd (AIS) a provider of telecommunication services. It offers mobile telecommunication services, fixed-broadband services, enterprise services, mobile device and digital lifestyle product sales, and digital services. The company also offers digital solutions like Cloud, Data Centers, and ICT solutions for businesses ranging from SMEs to large corporations. AIS provide its products and services through AIS shops, AIS Shop, AIS Telewiz, AIS Buddy Exclusive, distributors, wholesalers, direct sales and tele sales, and online channel. As of December 2025, AIS had over 13 million postpaid subscribers and approximately 33 million prepaid subscribers. AIS provides international mobile services covering both international voice calls and data roaming in over 240 countries, including 5G network roaming in over 90 countries. AIS generates its revenue from five services: Mobile, Fixed Broadband, IC and Equipment Rental, SIM and Device Sales, and Other Services. The company classifies its business operations into three reportable segments: Mobile Phone Services, Mobile Phone and Equipment Sales, and Datanet and Broadband Services.