How Data Transfer is calculatedin AWS S3?

Question

I was going through the AWS s3 calculator for Standard Storage . I didnt understood the meaning of Data Transfer calculation. How it is calculated?

Data Transfer:
Inter-Region Data Transfer Out: 10GB/Month
Data Transfer Out:10GB/Month
Data Transfer In:10GB/Month
Data Transfer Out to CloudFront:

Let say my use case is i want to upload a file, store it in S3 s long as i want it, i will download it whenever i want, i will modify the file and these operation i will do from across the world from mobile, laptop through my app/website.

Answer 1

You pay for all traffic going out of AWS (Data Transfer Out). You also pay for inter-region traffic.

Let's say you have a S3 bucket in Virginia and an EC2 in Oregon. This EC2 downloads a 100MB file from that bucket. You'll pay 100MB of inter-region. If you download the file from your PC, you pay 100MB of transfer out. You always pay for what goes out or to another region. If you partially download a file, you'll be charged that exact amount. That's basically it.