<ul><li>React Portals allow rendering components outside the normal DOM hierarchy for easier handling of z-index, positioning, and layering.</li><li>Portals are useful for modals, tooltips, dropdowns, and overlays that require breaking out of typical layout constraints.</li><li>Creating a modal with React Portals involves adding a target in index.html, creating the modal component, and using it in the app.</li><li>Portals maintain React tree structure, allowing components to retain access to context, hooks, and state.</li></ul>

Escaping the DOM with React Portals: Practical UI Rendering Techniques

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