What is the maximum file size you can transfer to S3 using a PUT request?

The maximum file size that can be transferred to Amazon S3 using a PUT request is 5 GB. This limitation applies specifically when using a single PUT operation to upload a file. For files larger than 5 GB, AWS S3 provides the Multipart Upload feature, allowing you to upload your file in multiple parts, which can each be up to 5 GB in size. This method is particularly useful for transferring large files efficiently and ensures that if an upload fails, you can simply retry uploading the failed parts rather than starting the entire upload process over again.

Understanding this limitation is important for developers working with AWS, as it impacts how they design their applications for file uploads. For instance, if an application frequently deals with large file uploads, it would need to implement Multipart Upload to handle those files effectively rather than relying on a single PUT request. This knowledge also highlights the flexibility and scalability of Amazon S3 for handling various sizes of files through its different upload methods.