You are an architect for a new sharing mobile application. Anywhere in the world, your users can see local news on topics they choose. They can post pictures and videos from inside the application. Since the application is being used on a mobile phone, connection stability is required for uploading content, and delivery should be quick.

Answer options:

A.Upload and store the files in S3 in several regions, and use Route53 to choose the region that has the minimal latency.
B.Upload and store in S3 in the region closest to the user and then use multiple distributions of CloudFront.
C.Upload to EC2 in regions closer to the user, send content to S3, use CloudFront.
D.Use S3 Transfer Acceleration that uses the Cloudfront global edge locations for uploading the content to the S3 bucket and for content delivery.

Answer – D
Option A is CORRECT because Route53 is not required in this case.
Options B and C are both incorrect because you do not need to upload the content to the source that is closer to the user. CloudFront will take care of that.
Option D is CORRECT because it uses S3 Transfer Acceleration to take advantage of the globally distributed edge locations in Amazon CloudFront. It enables fast, easy, and secure transfers of files over long distances.
For more information on Cloudfront, please refer to the below URLs
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/GettingStarted.html
https://stackoverflow.com/questions/24014596/upload-files-via-cloudfront-distribution
https://docs.aws.amazon.com/AmazonS3/latest/dev/transfer-acceleration.html
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/AddingObjects.html