WordPress Core files are the PHP and related source files downloaded from wordpress.org. The zipped package contains the main functionality of WordPress CMS (Content Management System).
You shouldn’t modify core files in any way. Changing core files can cause security vulnerabilities, incompatibilities, and other issues with the regular operation of WordPress. You can download the latest version of the core package from the wordpress.org/download/website.
What are the essential functions of WordPress core?
- Access the WordPress admin dashboard (WordPress management panel),
- Add and edit posts and pages,
- Manage users,
- Upload media files,
- Edit and delete content,
- Add tags and categories,
- Embed videos,
- Allow users to comment and reply to comments, and more.
You can learn more about WordPress on WordPress Codex
WordPress core updates are included in all WordPress Website care plans.