[klaas-]

you can use azure files nfs, that should be posix compliant, but it comes without auth or encryption ... :)

[phatfish]

The NFS protocol does not support all the functions of a "native" filesystem running on a block device.

NFS is fine for configuration files or read only. But workloads that do any sort of intensive writes will probably not like NFS, from SQLite up.

The newest NFS versions might fix some of the issues around caching that cause problems for write operations though.

[clarkevans]

NFS requires a custom VNet. Using a fully managed environment is important to us.