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I am planning on running a script located on an EC2 instance in us-east-1d.

The script basically pulls in images from a few different places and will throw them into an S3 bucket in the US-Standard Region.

Since there is no way to upload directly into an s3 bucket (by sending an API request that causes S3 to fetch a file from a remote URL and I don't think this has changed) I would like to make sure that the each image I save as temp file on my ec2 will not result in additional bandwidth charges when written to S3 (ie. leaves the Amazon data center). Will a us-east-1d EC2 instance uploading to a US-Standard S3 bucket will be communicating within the same AWS region?

Any insight into this would be greatly appreciated as it will be terabytes of data and I'm on a shoestring bucket I'd like to know before proceeding.

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Data transfer between Amazon EC2 and Amazon S3 within the same region doesn't charge you anything. 

As US standard essentially means "us-east-1", there is no charge for data transfer between the Amazon EC2 North Virginia Region and the Amazon S3 US Standard Region.

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