How to Improve the Speed of Uploading Large Files over the Public Network?

If the size of a file exceeds 100 MB, you are advised to upload the file using multipart upload over the public network. Multipart upload allows uploading a single object as parts separately. Each part is a part of consecutive object data. You can upload parts in any sequence. A part can be reloaded after an upload failure, without affecting other parts. Uploading multiple parts of an object using multiple threads concurrently can greatly improve the transmission efficiency.

For details about the code example, see Performing a Multipart Upload. You can also use the API for resumable upload provided by the SDK to upload large files.