ZeroFS vs. Amazon S3 Files

Amazon S3 Files and ZeroFS both provide POSIX filesystem interfaces backed by object storage, but differ fundamentally in their storage architecture and S3 integration. S3 Files maintains a one-to-one mapping between files and S3 objects, allowing direct S3 access and preserving files as ordinary objects, while ZeroFS uses an internal format with compressed, encrypted data segments and an LSM tree for metadata, preventing direct S3 access but enabling better storage efficiency. The choice between them depends on whether files need to remain accessible as native S3 objects or can be treated as an internal persistence layer.