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A comment on You don't need that CORS request. Parent comment

Re:You don't need that CORS request by dragonwriter on Monday January 03, 2022 @09:59AM (#29781379)
> But don't worry! AWS thought of this! They invented Another Cloud Thing, namely Lambda@Edge, to solve this.

No, CloudFront Functions is the Another Cloud Thing AWS invented more specifically for this use case. Lambda@Edge is the older and more general purpose edge computing facility.

> You read that right! Execute code every time a request hits your proxy!

Any rewrite rule in any platform, and heck, any other functionality provided by the distribution, is executing code every time it gets a request (whether or not you are writing code for the purpose.)

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Re:You don't need that CORS request by herpderperator on Monday January 03, 2022 @12:53PM (#29783789)
CloudFront Distributions cannot pass the request to CloudFront Functions before sending to the origin. In other words, they cannot be used to modify origin request/responses. They can only modify the viewer request/responses. [0]

Only Lambda@Edge can help the scenario which I provided, which is also AWS's recommended solution. [1]

[0] https://docs.aws.amazon.com/AmazonCloudFront/latest/Develope...

[1] https://aws.amazon.com/blogs/architecture/serving-content-us...

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