Cypress
In plain terms
A modern, developer-friendly end-to-end testing tool.
Going deeper
Cypress runs tests inside the browser for fast, reliable end-to-end testing with great debugging and automatic waiting. It targets developer experience.
Under the hood
Runs in the browser's event loop (reducing flakiness) but historically limited to single-tab/origin scenarios.
Examples
E2E web testing, component tests, time-travel debugging, modern SPAs.
Think of it like...
Like a test pilot riding inside the app, seeing exactly what happens in real time.