For example,
Bucketname/path1/folder1/file.png
Here the /path1/folder is called the prefix.
Prefixes plays a major role in increasing the performance. In general each prefix can support around 3500 request per second for put, post, copyand delete operations and around 5500 requests per second for get headoperations. So if you have data in two prefixes rather that one then you can get twice the requests increasing the performance. So you can achieve 7000 put, post, copy, delete requests per second and 11000 get, head requests per second.
Also, keep in mind that if you are using any encryption then it has its own limit for encryption during upload and decryption hits for download which will impact your overall requests per second. This is region specific and would be 5500,10000 or 35000 depending on the region of s3 bucket
