IONOS Simple Storage Service (S3) Object Storage is a secure, scalable storage solution that offers high data availability and performance. The product adheres to the S3 API standards, enabling the storage of vast amounts of unstructured data and seamless integration into S3-compatible applications and infrastructures.

Unlike traditional hierarchical systems like block storage volumes or disk file systems, Object Storage utilizes a flat structure that is ideal for storing large chunks of unstructured, static data that you want to keep ‘as is’ for later access. Businesses of all sizes can use IONOS S3 Object Storage to store files (objects) for varied Use Cases.

Service availability

The IONOS S3 Object Storage service is available in the following locations:

Data CenterS3 RegionBucket Type

Frankfurt, Germany


User-owned buckets

Berlin, Germany


User-owned buckets

Logroño, Spain


User-owned buckets

Berlin, Germany


Contract-owned buckets

For the list of available points of access, see S3 Endpoints.

How does IONOS S3 Object Storage work?

In IONOS S3 Object Storage, the data that you want to store in the Object Storage is called Objects. The data types could be archives, backups, log files, documents, images, and media assets. Each object is allocated a unique URL for direct access. Further, you can group these objects within a folder to help organize and manage these objects within a bucket. For more information, see Objects and Folders.

To begin with Object Storage, you need to generate a key, which is a unique identifier that allows you access to buckets and objects. This key is a combination of Access Key and Secret Key, listed in the Key Management section. For more information, see Key Management.

To upload objects into the Object Storage, you need to create containers known as Buckets by choosing the S3 region and a unique bucket name. The objects are stored in these buckets which are accompanied by rich metadata. For more information, see Buckets and Bucket Types.

Based on access permissions, buckets, and objects can be publicly accessible or kept private and shared with only intended users. Use the Access Control List (ACL) or Bucket Policy settings to manage access.

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