Exercise 2: Embedding vs. Proxying — Possible Solution ==================================================================== HOW LARAVEL'S mod_proxy_fcgi WORKS ------------------------------ Per this chapter, Laravel's own deployment reuses Apache by proxying - mod_proxy_fcgi forwards PHP requests over a socket to an independently-running PHP-FPM process pool, a genuinely separate process that Apache communicates with rather than manages directly. HOW PHUSION PASSENGER'S mod_passenger WORKS ------------------------------ Per this chapter, Passenger's own Apache module embeds Ruby process spawning and supervision directly into Apache's own module system. Apache itself manages the Rails application processes as a native extension of itself, with no separate proxy hop or independently-running process pool that Apache is merely forwarding requests to. WHY THIS MATTERS ------------------------------ Per this chapter, both approaches genuinely reuse the site's own already-live Apache, giving each rebuild course its own honest version of the same "modernize in place" story - but they are mechanically different techniques, not the same idea expressed in a different configuration syntax. One proxies to a separate process; the other embeds process management into Apache itself. WHY THIS WORKS AS AN ANSWER ------------------------------ It correctly explains that Laravel's mod_proxy_fcgi forwards requests to a separate PHP-FPM process, correctly explains that Passenger's mod_passenger embeds process management directly into Apache with no separate process being proxied to, and correctly frames both as real Apache reuse achieved through genuinely different mechanisms.