What is true regarding Multipart Upload and Resumable Upload in OSS?

Multipart Upload in Alibaba Cloud Object Storage Service (OSS) is designed to enhance the efficiency and speed of uploading large files by breaking them down into smaller, manageable parts. One of the key advantages of Multipart Upload is that it allows for the parallel uploading of file parts. This means multiple parts can be uploaded simultaneously, significantly reducing the total upload time compared to uploading the file in a single piece.

This capability is particularly useful when dealing with large files or when the upload connection has variable speeds, as it allows parts to be uploaded as they become available. The ability to parallel upload parts also facilitates better use of network resources, providing flexibility and efficiency in the overall file upload process.

In contrast to Multipart Upload, the other options refer to misconceptions about its functionalities or the characteristics of Resumable Upload. For example, Multipart Upload is not limited to small files only, and it does not require parts to be uploaded in a specific order, as they can be uploaded in any sequence and later assembled in the correct order by the server. Resumable Upload is a different concept aimed at resuming interrupted uploads and does not inherently possess speed advantages over Multipart Upload, especially in scenarios where parallel uploads are utilized.