How to set Cache-Control Header in CloudFront?

You can add a Cache-Control header to your CloudFront instance without the use of functions.

Go to AWS Console and navigate to the CloudFront instance
Go to Policies -> Response Headers and click on “Create response header policy” under custom policies. If you have an existing policy edit it.
In the next screen under Custom headers add, `Cache-Control` header along with the max age value you want. This value can be set to override origin if you want it.
Now go to your Distribution and navigate to the Behaviours tab.
In your default behaviour, under the Response headers policy select the one you just created.