Custom meta boxes enhance WordPress content management by adding tailored fields for better organization and display. Two main methods to implement them are Advanced Custom Fields (ACF), which provides an easy-to-use interface and automatic updates, and custom coding for more control but requiring more development skills. ACF is often preferred for its speed and user-friendliness, while custom coding offers flexibility for specific needs. Both methods can integrate with the Block Editor for modern content creation. ACF also offers advanced features like data validation and security, making it suitable for most projects.
https://www.advancedcustomfields.com/blog/add-meta-box-wordpress/