Well, it's pretty simple to do. You can use S3 bucket static web hosting to do the redirection. For example,
map domain www.hellogeorge.com (just an example) to www.myname.com/george
Create an S3 bucket called www.hellogeorge.com
and then set redirection domain/path to www.myname.com/george
then another person to map his domain www.otherdomainchristian.com to www.myname.com/christian
Create another S3 bucket called www.otherdomainchristian.com
and then set redirection domain/path to www.myname.com/christian
Now, when a user visits www.hellogeorge.com
or www.otherdomainchristian.com
, he/she will get a 301 redirection to the corresponding destination.
Next, you can use Amazon API Gateway to generate dynamic response depending on the request parameter.