A key reason behind Amex's adoption of WebAssembly is that WebAssembly demonstrated superior performance metrics compared to containers.

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American Express is using WebAssembly for its internal Function as a Service (FaaS) platform, opting for wasmCloud instead of traditional containers. This approach promises better performance, enhanced security, and efficient code execution. The move highlights WebAssembly's potential in enterprise applications, and contributions to wasmCloud from various industries continue to grow.

Amex’s FaaS Uses WebAssembly Instead of Containers