The Aspera FASP® high-speed transport platform is enabled to provide high-performance secure WAN transport of files, directories, and other large data sets to, from and between a number of leading third-party cloud storage platforms. The implementation is an enhanced transport stack and virtual file system layer in the Aspera server software that allows for direct-to-object-storage transfer over the WAN using the FASP protocol and the native I/O capabilities of the particular third party file system. The stack is available in all generally available Aspera server software products and supports interoperable transfer with all generally available Aspera client software.