end-to-end testing 3

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

End-to-end testing is when you run through your entire application from start to finish, just like a real user would. It makes sure all the pieces—like the front end, back end, and database—work together in harmony. This catches those annoying integration bugs that unit tests often miss.