Apache is a free and open-source cross-platform web server software.
Kadence WP Blocks is a plugin for WordPress that provides a collection of custom blocks for the Gutenberg editor, allowing users to create custom layouts and designs for their website without needing to know how to code.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
Twenty Twenty-One is the default WordPress theme for 2021.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.