In complex software systems where multiple APIs, databases, and services interact, verifying that everything works together can be challenging. Unit and integration tests often aren’t enough to ensure real-world reliability.

That’s where end-to-end testing comes in. It focuses on validating the entire user journey — from frontend actions to backend logic and data storage — making sure every part of the system behaves as expected.

The concept isn’t just about automation; it’s about building confidence that your application will perform correctly in real usage scenarios. The article linked above explains the purpose, process, and best practices of implementing end-to-end testing in modern development pipelines.

If you’re interested in strengthening your testing strategy or improving deployment stability, it’s a helpful read.