ReactDOM ?? Virtual DOM
What is DOM ?
The Document Object Model (DOM) connects web pages to scripts or programming languages by representing the structure of a document the HTML representing a web page in memory.

What is Node ?
A DOM document is a hierarchical collection of nodes. Each node can have a parent and/or children.

What is Virtual DOM ? 🤔
A Virtual DOM object is a representation of the real DOM object that exists in memory. This serves as a backbone for React for all DOM processing.

Also, You can see the magic on inspector screen when you clicking a button on some child component of ReactDOM.

ReactDOM is an object which exposes a number of top-level APIs to interact with the browser DOM. According to the docs, it provides ‘DOM-specific methods that can be used at the top level of your app and as an escape hatch to get outside of the React model if you need to’.
need to.
I hope I could help ❤️ ReactDOM