What it means in plain language
A widget is a small, independent interface element that performs a specific function or presents selected information.
Where it genuinely helps
A widget is an embedded functional element and must coexist with host layout, accessibility, performance and data policy.
What to decide before acting
Define loading, z-index, no-JavaScript state, data boundaries and behaviour when an external service fails.
How to tell whether it works
Test focus, Escape, touch, dragging, small screens, state memory, network errors and Core Web Vitals impact.
