Airwallex, a fintech payments startup based in Singapore, has reached an annual revenue run rate of $500 million after seeing significant growth in its North American and European businesses. Airwallex's CEO and co-founder, Jack Zhang, aims to prepare the company for an initial public offering by 2026. Zhang believes reaching $1 billion in annual revenue is the next big milestone, which he hopes to achieve within three years. Airwallex processes over $100 billion in annual payments, up 73% from the previous year. Zhang expects this to double to $200 billion within a year.