Chunked and scalable. Zarr is a chunked file format for arbitrarily sized n-dimensional arrays, also known as tensors. Storing the data in chunks allows to efficiently cut out small pieces of the data to work with at a time. It also enables writing to the data in parallel without conflicts. The format supports various compression algorithms. These features make Zarr a scalable storage format for even the largest datasets.
Cloud-native. Zarr is designed as a cloud-native format, which enables cost-effective storage and remote access. Data can be stored and managed in centralized storage. Streaming-based access no longer requires copying or transferring of the data.
Zarr is useful for many scientific domains that deal with large data. Some domains already use Zarr actively.