Case Study: Advanced Info Service achieves 100,000+ COVID-19 vaccine registrations in 4 hours with Microsoft Power Apps

Thai telco develops efficient, cloud-based COVID-19 vaccine registration app in 10 days

Advanced Info Service (AIS), Thailand’s largest mobile operator, needed a technology partner to handle extreme peak traffic and rapidly deliver a national COVID‑19 vaccine registration solution. Facing repeated downtime during high-demand campaigns, AIS worked with Microsoft Power Apps (and Microsoft Azure infrastructure) to design a cloud‑based, hyper‑scalable registration system that could meet government requirements and avoid previous performance failures.

AIS’ IT team built the vaccine registration web app in 10 days and ran it on Azure with Microsoft’s support; Microsoft Power Apps was also used across AIS to streamline internal workflows and cut paper use to 1%. The solution handled mass demand flawlessly—over 100,000 registrations in the first four hours with zero downtime—and followed earlier success booking 20,000+ iPhone 12 units, while enabling ongoing cloud migration and a joint Cloud Delivery Center for future app modernization.

Advanced Info Service

Khun Suppachai Panichayunon

Head of Solutions Business Unit