Is Theia exactly an IDE?

Theia has functions that very much alike vscode but vscode describe itself as a text editor while Theia as a platform to build IDEs. Can anybody make this clear?

[original thread by Harriet Mitchell]

@harrmitch Theia is a framework or platform to build cloud and desktop IDE-like applications, is customizable, extensible, and also supports VS Code extensions. It makes use of some common components as VS Code such as the Monaco text editor and uses both the language-server-protocol (LSP) and debug-adapter-protocol (DAP).

[Jonas Helming]

Maybe this article helps, too, it provides a detailled comparions between VS Code and Eclipse Theia: https://eclipsesource.com/blogs/2019/12/06/the-eclipse-theia-ide-vs-vs-code