end-to-end testing 2

https://theaccessibilitytestingnotes.greyhavendaily.com/posts/why-accessibility-testing-is-a-must-for-modern-web-development

End-to-end testing is where you simulate a real user's journey through your entire application, from clicking a button to seeing the final confirmation screen. It catches integration issues that unit tests miss by verifying that every component—database, API, frontend—works together. It takes time but gives you confidence that your app actually works for users.