What is an application's "entry point"?

The application's entry point is the point where its execution begins. In Angular, it is the file through which the entire application is loaded and initialized.

For Angular, this is usually:

1. main.ts - the main file where platformBrowserDynamic().bootstrapModule(AppModule) is called. This is where Angular starts the application's root module (AppModule).
2. The root component - specified in the bootstrap of the root module. It is the first to render into the DOM and starts the entire component hierarchy.

The entry point defines the startup chain for loading the application's modules and components.