web-e2e-overview

What web E2E testing is

Web end-to-end (E2E) testing drives a real browser the way a user would: a page is loaded, interactions are performed (clicks, form fills, navigations), and outcomes are asserted against what the user should see. Per [playwright.dev/docs/intro][pwi]: "Playwright Test is an end-to-end test framework for modern web apps. It bundles test runner, assertions, isolation, parallelization and rich tooling." That bundle is what distinguishes an E2E framework from a bare browser-automation library: a runner, an assertion library with retry, per-test isolation, and parallelism.