What is lazy loading, AOT and GIT compilation and difference. What are promises and Observables and their differences. Differences between Angular and Angular js

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Lazy loading, AOT, GIT compilation, Promises, Observables, and differences between Angular and AngularJS.

Lazy loading is a technique to load modules on demand.
AOT (Ahead of Time) compilation compiles templates during build time.
GIT compilation is a process of compiling TypeScript code to JavaScript.
Promises are used for asynchronous programming and represent a single value that may be available now, in the future, or never.
Observables are used for asynchronous programming and represent a stream of values that may arrive over time.
Angular is a complete rewrite of AngularJS and uses TypeScript, while AngularJS uses JavaScript.
Angular has a more modular architecture and better performance than AngularJS.

What is lazy loading, AOT and GIT compilation and difference. What are promises and Observables and their differences. Differences between Angular and Angular js

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