- <strong>ACME vs. ACME device attestation.</strong> Standard ACME issues certificates to servers and workloads, proving control of a domain or IP address through the <code>http-01</code>, <code>dns-01</code>, or <code>tls-alpn-01</code> challenges. <a href="https://smallstep.com/platform/acme-device-attestation/">ACME device attestation (ACME DA)</a> extends the same protocol to issue hardware-bound certificates for <em>device</em> identity, using the <code>device-attest-01</code> challenge to verify a device's built-in security module. Reach for ACME DA when you're identifying devices rather than servers.
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