Apache, or Apache HTTP Server, is one of the most widely used web server software programs. It’s what actually receives requests from browsers and serves back your website’s files — the pages, images, and other content people visit.
You’ll rarely interact with Apache directly as a WordPress user, but it’s running quietly behind almost every shared hosting plan out there.
Apache vs Nginx
Apache’s main alternative is Nginx, another popular web server. Apache has been around longer and is known for flexible configuration through .htaccess files, while Nginx is often praised for handling high traffic more efficiently.
Many hosting providers actually run both together, using Nginx to handle static files quickly while Apache processes more complex requests.
Why It Matters for WordPress Users
If you’ve ever edited permalinks or seen a mention of .htaccess while troubleshooting a “page not found” error, that’s Apache-related configuration. Most hosts handle this automatically, so it’s mainly useful to understand if you’re debugging server-level issues.