Why WordPress with Composer and the classic directory structure?

• Support for the Apache webserver while a usual "skeleton composer installation" works only with Nginx if you'd like to keep the adming panel address /wp-admin, but not wp/wp-admin.
  • Very useful with the multisite setup, because saves classic configs from the Codex for both nginx and Apache
• The supported folder structure by the WP Engine, which let you use the composer for the Wordpress and keep your SLA and warranties from the vendor.
• Guarantee that all plugins and extensions will work.
• Simplified CI/CD for the basic WordPress installation approach
  • You just build with the composer (plus maybe your frontend), pack the web folder, and put its content to the server.