URL redirect/rewrite

finding a way to successfully do a URL redirect/rewrite so that your base URL does not change and the query string should be rewritten with another query string. We are planning to away from my website hosted on NGINX, which is currently where these redirect/rewrites are happening.

For example, try to run www.gopetplan.com/aapo it will redirect to www.gopetplan.com/partners/AAPO by serving static webpage(which is hosted on 3rd party vendor) without changing base URL, though static webpage content getting served from another domain