AngularJS architecture for large-scale apps: modular structure, separation of concerns, dependency injection, controllerAs syntax, one-way binding, services for shared functionality, ui-router for complex routing, and thorough testing practices.

Advanced component patterns enhance development efficiency. Smart components handle logic, dumb components focus on presentation. Container components connect dumb components to the app. Communication patterns like events and shared services enable component interaction.

Redux simplifies AngularJS state management. Single source of truth, actions, reducers, and store work together for efficient data flow. Middleware like redux-thunk enables async operations. Beneficial for complex, shared data across components.

Custom Angular directives create reusable UI components with controllers, transclusion, and two-way data binding. They enhance code reusability, improve maintainability, and enable complex functionality in a modular way.

AngularJS to TypeScript migration enhances code quality with static typing, interfaces, and modern practices. It improves bug detection, readability, and maintainability. Gradual adoption possible, encouraging better code structure and deeper understanding of application architecture.

AngularJS and Angular differ significantly. Angular uses TypeScript, component-based architecture, and unidirectional data flow. Migration involves gradual component transformation, using ngUpgrade for hybrid apps, and updating services and routing.

Lazy loading and module bundling optimize web apps by loading content on-demand and organizing code efficiently. Tools like ocLazyLoad and Webpack enhance performance, improving user experience in large applications.

Dependency injection enhances flexibility and modularity. Provider pattern enables lazy loading, while decorator pattern modifies service behavior. These techniques improve code maintainability, testability, and extensibility in real-world applications.

AngularJS internationalization and localization using angular-translate. Configure translations, use filters, handle pluralization, and manage RTL languages. Implement language switching and use placeholders for flexibility.

Server-side rendering in AngularJS improves load times, SEO, and accessibility. It renders pages on the server, delivering faster content to users and search engines. Implementation requires server setup and code adjustments.

AngularJS security: CSRF protection, input sanitization, secure API communication with JWT, and preventing SQL injection. Implement proper authentication and stay vigilant against evolving threats. Regular updates and continuous learning are crucial.

Build optimization and deployment strategies streamline software development. Tools like Grunt, Gulp, and Webpack automate tasks. CI/CD pipelines, blue-green deployments, and canary releases ensure smooth rollouts. Caching, minification, and containerization improve performance.

CI/CD for AngularJS automates building, testing, and deploying code. Tools like Jenkins and GitHub Actions streamline development, catch bugs early, and enable faster feature delivery.

Hybrid apps combine AngularJS with React or Vue using wrapper directives. This allows gradual modernization, leveraging strengths of multiple frameworks. Careful planning, performance optimization, and thorough testing are crucial for successful integration.

PWAs combine web and app features. AngularJS enables offline-capable web apps with service workers, app manifests, and caching. They offer fast, reliable experiences, even offline, revolutionizing web application development.

AngularJS performance optimization: Use Chrome DevTools and ngStats for profiling. Minimize watchers, implement infinite scrolling, use one-time bindings, optimize $digest cycles, and employ proper build processes for faster apps.

Angular's ngAnimate module enhances web apps with smooth animations. It enables dynamic content transitions, route changes, and data visualization animations. When used purposefully, it improves user experience and engagement in Angular applications.

Firebase revolutionizes real-time data sync in AngularJS apps. It offers instant updates, offline support, and easy authentication. Perfect for collaborative tools and real-time games, Firebase simplifies complex tasks, enhancing user experience.

Advanced routing in Angular: nested views, named views, route guards, dynamic routing, lazy loading, error handling, and SEO optimization. Organize code, improve performance, and enhance user experience in single-page applications.

Real-time chat app using WebSockets and Firebase. Includes authentication, message storage, and instant updates. Key features: Express server, Socket.io for real-time communication, Firebase for authentication and data persistence.