TLDR: Custom WordPress blocks improve flexibility and editing, developed using React or PHP with Advanced Custom Fields (ACF). React requires plugins and setup, while ACF simplifies development with just PHP. Best practices include modular code, efficiency, accessibility, and performance optimization. Methods:
1. React: Offers dynamic features but has a learning curve.
2. ACF Blocks: Easier, faster, PHP-based solution for developers. They provide faster delivery, lower costs, and easier maintenance. Focus on modular design, accessibility, and performance for scalable development. ACF PRO enhances workflow with custom fields integration.
https://www.advancedcustomfields.com/blog/wordpress-block-development/