Zenko CloudServer

Zenko CloudServer is an open-source, Amazon S3-compatible object storage server written in Node.js. It can be used to emulate S3 locally for development and testing, or as a single S3 API front-end that routes data to different storage backends on-premises or in public clouds.

Key Features

• Implements the Amazon S3 API for S3-compatible applications and tools
• Multiple backend options, including filesystem-based storage and in-memory storage
• Multi-backend routing to store objects in different locations based on configuration and request metadata
• Designed for development workflows such as local S3 emulation and CI testing
• Part of the broader Zenko multi-cloud data management ecosystem

Use Cases

• Local S3-compatible storage for application development and integration testing
• CI pipelines that require an AWS S3-like endpoint without external dependencies
• Unified S3 access layer in front of multiple storage targets (on-prem and cloud)

Limitations and Considerations

• Some advanced AWS S3 behaviors may differ depending on configured backends and deployment choices
• The in-memory backend is intended for testing and does not provide persistence

Zenko CloudServer is a practical choice when you need an S3-compatible endpoint you control, either to mimic AWS S3 locally or to abstract multiple storage backends behind a single S3 API. It fits well in developer environments and in architectures that benefit from flexible object storage backends.