S3 API Compatibility

The S3 (Simple Storage Services) API has been the global standard for object storage for many years. It provides interoperability and compatibility of various object storage systems that adhere to this standard. IONOS S3 Object Storage has one of the highest levels of S3 API support.

For more information, see IONOS S3 Object Storage API documentation.

Feature	Supported	Notes
Bucket CRUD	Yes
Object CRUD	Yes
Object Copy	Yes	Cross-regional copying is not supported
Multipart Uploads	Yes
Pre-Signed URLs	Yes	Signature types v2 and v4 are supported
Bucket ACLs	Yes
Object ACLs	Yes
Block Public Access	Yes	Only via the API
Bucket Policies	Yes
Object Policies	Yes
CORS Configuration	Yes
Bucket Versioning	Yes
Bucket Replication	Yes	Intraregional and cross-regional replication are supported
Bucket Tagging	Yes	Only via the API
Object Tagging	Yes	Only via the API
Bucket Lifecycle	Yes
Bucket Access Logging	Yes
Bucket Encryption Configuration	Yes	Server-side encryption is used by default in the web interface. The encryption with customer-managed encryption keys is available via the API.
Object Encryption	Yes	Only via the API
Bucket Websites	Yes
Bucket Inventory	Yes	Only via the API
Object Lock	Yes
Legal Hold	Yes
Identity and Access Management (IAM)	No
Security Token Service (STS)	No
Multi-factor Authentication	No
Bucket Notifications	No
Request Payment	No
Bucket Metrics	No
Bucket Analytics	No
Bucket Accelerate	No
S3 Select	No