COG vs Zarr Explained — And Where MrSID Fits In

Author : Geo WGS84 | Published On : 22 Apr 2026

As the amount of geospatial data continues to increase significantly and cloud-based workflows have become commonplace, selecting the correct format for geospatial data has grown increasingly important. Two formats that are frequently discussed in relation to modern digital geospatial/scientific data systems are Cloud Optimized GeoTIFFs ('COG') and Zarr. While both formats are intended to promote effective access and usage of very large datasets, each is designed for different types of datasets and different types of infrastructure.

https://www.lizardtech.com/post/cog-vs-zarr-explained-and-where-mrsid-fits-in