Based on the diagram, the type of proxy server that is handling the client's request is called "Reverse proxy server"
A reverse proxy is a server that operates in front of web servers and sends client requests (such as web browser requests) to those web servers.
A reverse proxy adds an extra layer of abstraction and control to guarantee that network traffic flows smoothly between clients and servers.
A reverse proxy works by sending user/web browser requests to web servers. It works by safeguarding the web server's identity.
By rerouting requests on behalf of web servers, this kind of proxy server contributes to improved performance, security, and dependability.
See the attached image for a better understanding and description of the architecture of the reverse proxy server.
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