# Quality Stack

> **Testing, accessibility, performance monitoring** — shared by both the [indian-sde-faang lane](../lanes/indian-sde-faang/INDEX.md) and the [abroad-full-stack lane](../lanes/abroad-full-stack/INDEX.md).

| Section | Files | Topics |
|---------|------:|--------|
| [Testing](testing/INDEX.md) | 11 | Jest, RTL, unit, integration, E2E, mocking, Vitest, load testing |
| [Accessibility](accessibility/INDEX.md) | 7 | WCAG, ARIA, keyboard navigation, color contrast, forms & labels |
| [Performance-Monitoring](performance-monitoring/INDEX.md) | 8 | Core Web Vitals, profiling, Lighthouse CI, bundle analysis, RUM |

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**Lane-specific overlays:** Add interview strategy context, behavioral stories, and prep plans in [Interview Lanes](../lanes/INDEX.md) — the stacks stay stack-pure.