Frontend frameworks are nowadays the basis of almost every modern website or web application, although the choice is not always easy. React from Facebook is a component-based library - flexible and widely used, but you often have to choose your own tools (bundlers, routing, state management), which may suggest more configuration effort. Next.js adds server-side rendering (SSR), static page generation (SSG) and optimizations for SEO to React; so it seems a natural choice for e-commerce and corporate sites that need to be fast and well-indexed. Angular from Google is a full framework in TypeScript with built-in routing, forms support and testing tools - it works well for large, complex business systems like CRMs, ERPs and admin panels, though it's sometimes seen as harder to master. Vue.js combines simplicity with great flexibility; it has a gentle learning curve and often pleasant DX, but its ecosystem can be less unified than that of React or Angular. In practice, the choice depends on the specifics of your project, budget and long-term plans - what works in an online store won't necessarily be ideal in an ERP system. You'll find technical comparisons, specific case studies from implementations and practical advice; if I'm being honest, it's often worth testing two solutions on a prototype before making a final decision.