Quick Answer: AWS Nitro Enclaves trust AWS's own Nitro Hypervisor for attestation. Intel TDX trusts the CPU silicon itself. For GDPR Article 25 and Schrems II compliance, that difference isn't academic — it's the gap between "we promise" and "physics prevents us."

TL;DR: I spent 3 weeks comparing both stacks for a French fintech's DPO. Nitro Enclaves: 14-23% performance hit, AWS-controlled root of trust, US legal jurisdiction. Intel TDX on bare metal: 3-7% overhead, CPU-bound attestation, EU-hosted. Their DPO picked TDX. Here's the data.

The Attestation Root Problem Nobody Talks About

Every confidential computing pitch sounds identical. "Encrypted memory." "Isolated workloads." "Verifiable trust."

Then you read the fine print.