Cloud teering Bandwidth limits

There's no bandwidth limit from AWS side. The upload speed through internet is depends on various factor like your network configuration, ISP between AWS and your onprem datacenters, the protocol that your are using for uploading your storage data and your data characteristic. I recommend you to take a look AWS snowball series if you need to upload large volume of data (over10TB) to AWS. https://aws.amazon.com/snowball/