What is the minimum file size allowed for uploads to S3?

Amazon S3 (Simple Storage Service) allows you to upload files starting from a minimum size of 0 bytes. This means you can upload an empty object, which is still a valid operation within S3. The correct understanding of this capability is essential for various use cases, such as initiating uploads where the content may not be available immediately or creating placeholders for later data.

If a file were required to be at least 1 byte in size, it would limit certain functionalities like the ability to create an empty object, which can be undesirable in applications where such flexibility is needed. Therefore, the capability to upload files as small as 0 bytes is fundamental to the design and functionality of S3, highlighting its versatility in handling different data requirements.