generated: '2026-07-20'
method: searched
source: https://min.io/product/s3-compatibility
standards:
- id: aws-s3-api
  conforms: true
  evidence: MinIO implements the Amazon S3 REST API (bucket/object operations, multipart, ACLs, tagging) as its native data-plane API
- id: aws-signature-v4
  conforms: true
  evidence: Requests authenticated with AWS Signature Version 4
- id: aws-sts
  conforms: true
  evidence: Security Token Service with AssumeRole/AssumeRoleWithWebIdentity/LDAP/ClientGrants
- id: aws-iam-policy
  conforms: true
  evidence: IAM-compatible JSON policy documents for users, groups, service accounts
- id: s3-select
  conforms: true
  evidence: SelectObjectContent (S3 Select) SQL over CSV/JSON/Parquet objects
- id: s3-object-lock-worm
  conforms: true
  evidence: Object Locking / WORM retention (governance and compliance modes) and legal hold
- id: rfc9457-problem-details
  conforms: false
  evidence: Errors use the S3 XML error envelope, not application/problem+json
- id: oauth2
  conforms: false
  evidence: No OAuth2 authorization on the data plane; OIDC is used only as an STS identity source
- id: openid-connect
  conforms: partial
  evidence: OIDC supported as an external identity provider for STS, not as API authorization