How does AngularJS manage large-scale application boot time optimization?

Boot time optimization in AngularJS involves reducing module size, minimizing watchers, and lazy loading components.

AngularJS boot time depends on module loading, dependency injection resolution, and DOM compilation. Large applications suffer slow startup due to heavy dependency graphs and template compilation. Optimization techniques include manual bootstrap, bundling and minification, avoiding large ng-repeat at startup, and deferring non-critical module initialization. Pre-compiling templates also reduces runtime cost.