Explain the concept of dependency injection (DI), why it is used in Angular, and how it improves the modularity and testability of an application.
Discuss the concept of lazy loading modules, its benefits, and how to configure routes to utilize lazy loading.
Describe how the Virtual DOM works and why it is beneficial for optimizing updates to the browser's DOM.
Talk about the Context API, its use cases for propagating data, and avoiding "prop drilling" through component trees.
Discuss alternatives to Vuex for state management in Vue, such as using the Composition API or providing/injecting.