Contabo Object Storage vs STACKIT

Ceph S3 API with path-style buckets

Contabo states the store is Ceph-based and largely S3 compatible, not fully equivalent to Amazon S3. Logging is not supported. Official tool notes require Contabo S3 URLs, path-style buckets, and access_key/secret_key mapped to aws_access_key_id/aws_secret_access_key.

EU, US, and Singapore S3 endpoints

Documented base URLs are eu2.contabostorage.com (European Union), usc1.contabostorage.com (United States), and sin1.contabostorage.com (Singapore). The management API allows one object-storage purchase per location. All locations on an account share the same S3 credentials.

Bucket versioning and Object Lock

Versioning is enabled per bucket via s3api put-bucket-versioning on the regional endpoint. Suspending versioning stops new versions but does not delete old ones. Object Lock can be turned on at bucket creation (example uses GOVERNANCE mode) so objects cannot be overwritten or deleted for a retention period.

Capacity auto-scale via management API

The Contabo API (not the S3 API) orders, upgrades, cancels, and auto-scales purchased space up to a monthly size limit. Usage statistics are exposed there. The open-source cntb CLI (GPL-3.0) wraps the same management API. S3 keys come from the User Management API or the Object Storage panel.

Published client list and hard limits

Documented working tools include cntb, aws cli, rclone, Cyberduck, goofys, s3fs-fuse, s3cmd, WinSCP, Cloudberry Explorer, BucketAnywhere, Virtualmin, Velero, and Plesk. FileZilla Pro is listed as incompatible. Defaults include 5 TB max object size, 100 buckets, 3 million objects (increasable on request), 250 requests per second, and 10 MByte/s default bandwidth.

Comprehensive IaaS: Compute and Storage

STACKIT's Compute Engine provides virtual machines and GPUs for workloads from general computing to AI training. Storage options include object for unstructured data, block for high-performance databases, file sharing, and automated backups. These run in EU data centers, offering low-latency access and scalability without vendor lock-in. Users benefit from predictable performance in regulated environments.

Managed Kubernetes and PaaS

The STACKIT Kubernetes Engine (SKE) deploys CNCF-compliant clusters with automated scaling and updates. Cloud Foundry supports application development and operations. Databases and messaging services like RabbitMQ integrate seamlessly. Developers focus on code while STACKIT handles infrastructure, reducing setup time and operational overhead for containerized apps.

Security and Observability Tools

Features like Secrets Manager, Key Management Service, and Network Security protect data at rest and in transit. Confidential Computing safeguards sensitive workloads. Logging via LogMe and Observability stack provide real-time insights. These tools ensure compliance and quick issue resolution, vital for industries facing strict audits.