# Overview
- [Overview](#overview)
- [What is this?](#what-is-this)
- [Our Goals](#our-goals)
- [What is tested?](#what-is-tested)
## What is this?
End-to-end tests (`e2e` for short) describes the automated functional tests that simulate user interaction with the system under test.
A well-maintained suite of e2e tests, in conjunction with CI (continuous integration) pipelines will ensure that regressions to key user flows are caught as early as possible in the development cycle.
## Our Goals
To accelerate development by being a force for continuous improvement, and help identify, prioritize and mitigate bottlenecks from the system.
(taken from Quality Squad internal memo)
## What is tested?
These end-to-end test focus on several key areas:
- Calypso features.
- interaction between Calypso and Gutenberg editor.
- internationalization and localization.
- Gutenberg blocks added by WordPress.com.