A team has set up a CloudFront distribution with a web application hosted on an EC2 Instance as the Origin point. The Web application serves videos (HLS format) to various users. There is a requirement to ensure that a certain section of files needs to be accessed by only a certain subscriber on the website. Which of the following would you consider for this requirement?

Answer options:

A.Use Pre-signed URLs.
B.Use signed cookies.
C.Implement CORS.
D.Use Lambda@Edge.

Answer - B
This is mentioned in the AWS Documentation.
Use signed cookies in the following cases.
· You want to provide access to multiple restricted files, for example, all of the files for a video in HLS format or all of the files in the subscribers` area of a website.
· You don`t want to change your current URLs.
Option A is incorrect since this is used when you want to restrict access to individual files.
Option C is incorrect since CORS is used for access between domains.
Option D is incorrect since Lambda@Edge is an extension of AWS Lambda, a compute service that lets you execute functions that customize the content that CloudFront delivers.
For more information on choosing between signed URLs and cookies, please visit the below URL
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private-content-choosing-signed-urls-cookies.html