Rewrite path of moved section of a website

To rewrite everything under /blog/<PATH> to /marketing/<PATH> you must modify the first component of the path (/blog/). Create a rewrite URL rule and use the regex_replace() function for this purpose:

starts_with(http.request.uri.path, "/blog/")

regex_replace(http.request.uri.path, "^/blog/", "/marketing/")

The regex_replace() function matches the path component on a regular expression (^/blog/) and then provides a replacement for that match (/marketing/).