The self-built API gateway helped us save 38% on third-party call costs, but we ran into issues with cross-regional adaptation.
This article is based on the practical experience of a Southeast Asian e-commerce tools team. It breaks down the core value and implementation pitfalls of building a custom gateway, clarifies the scope of applicable teams, and provides practical advice that can be directly used. It helps overseas developers and small and medium-sized enterprises determine whether it is necessary to invest in building a custom gateway, as well as how to avoid common mistakes.
