Actual PHP structure for building custom Elementor widgets — registration, controls, rendering — for when Elementor's stock widgets aren't enough.
Covers the widget class structure, adding editable controls (text, color, repeaters), proper output escaping, and common mistakes (skipping escaping, not namespacing classes, building one giant widget instead of focused ones).
Also flags something that trips a lot of people up: Elementor's widget registration hook name has changed across versions — always check current docs before building on a live client site.
Full writeup: https://amanurrahman.com/blog-post/custom-elementor-widgets-guide