Amazon Web Services (AWS), the world's largest cloud-computing provider.
The engine treats it as the physical hardware layer that the AI actually runs on, not the brain but the machine underneath.
AWS runs specialized government and Defense Department cloud infrastructure, is a Glasswing member, and is Anthropic's main compute provider, backed by more than $4 billion of investment from Amazon.
It matters because whoever supplies the physical computing power sits underneath the whole AI system, making AWS foundational rather than the top.