The Modern Backend Stack Explained (opens in new tab)

Every web application you've ever used has two sides: what you see (the frontend) and what powers it (the backend). The backend is responsible for business logic, data storage, authentication, third-party integrations, and everything else that happens behind the scenes. A backend stack is the collection of technologies — languages, frameworks, databases, and infrastructure tools — that work together to make all of that possible. In 2026, the backend landscape is broader than ever. New framewo...