HDF5 has some S3-native features emerging (https://www.hdfgroup.org/wp-content/uploads/2019/11/SC19-HDF5-BOF.pdf https://www.hdfgroup.org/wp-content/uploads/201

HDF5 has some S3-native features emerging (https://www.hdfgroup.org/wp-content/uploads/2019/11/SC19-HDF5-BOF.pdf https://www.hdfgroup.org/wp-content/uploads/2019/11/SC19-HDF...), and there's also this relevant comparison reading HDF5 files as efficiently as native Zarr: https://medium.com/pangeo/cloud-performant-reading-of-netcdf4-hdf5-data-using-the-zarr-library-1a95c5c92314 https://medium.com/pangeo/cloud-performant-reading-of-netcdf...