you need more connections than what a single AWS CLI process open to saturate network on a big box. You can achieve the same by doing some "xargs | aws cli" tri

you need more connections than what a single AWS CLI process open to saturate network on a big box. You can achieve the same by doing some "xargs | aws cli" trickery but then error handling becomes harder. Our S3 client just handles multiple worker processes correctly with error handling.