Selenium: uses, strengths, and limitations

In plain words

Selenium is the original browser automation project, and it is still the most widely deployed. Its core, WebDriver, is a web standard — meaning browser makers themselves support the way it drives their browsers. That is a quiet but serious advantage.

The trade-off is philosophical. Selenium gives you the engine, not the whole car. You bring your own test runner, assertions, reporting and structure. Newer tools hand you all of that in one box.

What using it looks like

Notice the explicit wait at the end. Selenium does not assume anything about readiness, so you state it yourself. Teams that do this consistently get stable suites; teams that sprinkle fixed sleeps instead end up with the flaky suites Selenium is unfairly blamed for.

The other half of the project is Grid, which spreads tests across many machines. If you need a hundred browsers running at once inside your own network, this is well-trodden ground.

What to watch out for

• You are assembling a framework, not adopting one. Budget for those decisions up front.
• Waiting is your responsibility. This single topic causes most Selenium flakiness.
• Running your own Grid is infrastructure work — someone has to own it.
• Debugging evidence such as traces and video is not built in; you add it.

Common questions