Making systems on different hardware, such as Intel, AMD, Arm and NVIDIA, verify each other.
A service on Intel hardware calls a service on AMD hardware, which uses an NVIDIA GPU. Each produces different evidence in a different format, signed by a different company.
The usual answer is a verifier that understands all of them and issues one common result, often as an Entity Attestation Token. Each side then checks the result, and the verifier's own trustworthiness becomes the question.
Mixed fleets raise the cost of re-attestation. A flaw in one vendor's hardware changes policy for that part of the fleet only, and the verifier has to keep the rules apart.
Attested AIAttested cloud workloads
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Next fixed date: EU Digital Identity Wallets are due in every member state on 24 December 2026, 42 days from now.