This document discusses how a large Asian low-cost airline migrated their web frontend to AWS public cloud to gain scalability. During quarterly sales promotions, the airline's website would go down within minutes due to a surge in traffic that exceeded their existing infrastructure capacity. By using AWS, the airline was able to automatically provision over 60 servers within 25 minutes before each promotion to handle the increased load. This improved site availability and helped convert more customers, while reducing promotion infrastructure costs by 40%. After each promotion, the extra infrastructure was turned off to avoid unnecessary costs.
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