Parsing request bodies is essential for handling POST, PUT, and PATCH requests in Express applications that receive form data or JSON. As the creator of CoreUI with over 25 years of backend development experience, I’ve handled countless API implementations that require proper body parsing. The most modern approach is using Express’s built-in body parsing middleware instead of the separate body-parser package. This provides reliable parsing for JSON, URL-encoded data, and raw content with built-in security features.