generated: '2026-07-20'
method: searched
source: https://docs.openio.io/latest/source/arch-design/s3_compliancy.html
description: >-
  Cross-cutting standards OpenIO SDS 20.04 conforms to. OpenIO's value
  proposition is protocol compatibility: it presents object storage through an
  Amazon S3-compatible gateway and an OpenStack Swift-compatible gateway, plus a
  documented subset of AWS IAM. Support is partial and enumerated in the S3
  compliance reference.
standards:
  - id: s3-api
    conforms: true
    partial: true
    evidence: >-
      S3 gateway supports AWS Signature v2 and v4, path-style and host-style
      addressing, bucket versioning/lifecycle/CORS/tagging/ACLs, object CRUD +
      ACLs + tagging + copy + torrent, and the full multipart upload workflow.
    unsupported:
      - bucket encryption
      - bucket policies
      - replication configuration
      - website hosting
      - object restore
      - POST object
    docs: https://docs.openio.io/latest/source/arch-design/s3_compliancy.html
  - id: openstack-swift-api
    conforms: true
    partial: true
    evidence: Swift-compatible gateway and Swift CLI/API support documented.
    docs: https://docs.openio.io/latest/source/user-guide/swiftapi.html
  - id: aws-iam
    conforms: true
    partial: true
    evidence: >-
      Documented subset of AWS IAM at the S3 gateway; user policies only, with a
      fixed set of S3 actions, condition keys (s3:prefix/s3:delimiter/s3:max-keys)
      and string operators.
    docs: https://docs.openio.io/latest/source/arch-design/iam.html
  - id: oauth2
    conforms: false
    evidence: No OAuth2; gateways use AWS Signature and Swift auth.
  - id: rfc9457-problem-details
    conforms: false
    evidence: S3/Swift XML error envelopes, not application/problem+json.