What is Inbound/Outbound data transfer?

amazon-s3 hosting amazon data-transfer
Camilo Sanchez picture Camilo Sanchez · Jan 23, 2014 · Viewed 16.7k times · Source

Amazon allows free inbound data transfer, but charges for outbound data transfer. I don't understand what that exactly means. Does this means that data you upload to amazon is free, but data you download is not? This question may be silly but I want to know what you guys think about this.

Answer

Elliott Frisch picture Elliott Frisch · Jan 23, 2014

You have it correct. Data "inbound" to Amazon (that is, packet data that is destined for the Amazon cloud servers; for example, uploads and client requests) are free. Data "outbound" from Amazon is billed (that is, downloads from the cloud and responses to client requests).

Anyway, here is a picture that may help you visualize this

Technet image

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