What testing frameworks are popular in 2025, and which ones should I focus on after returning to the field?

Definitely, @akanshasrivastava.1121 !

XUnit is a great choice for modern .NET development, but if you want something deeply integrated with Microsoft’s ecosystem, MSTest is still relevant and worth considering. It’s the official framework for Visual Studio and remains essential for enterprises working within Microsoft’s stack.

It offers out-of-the-box integration with Azure DevOps, making it particularly valuable in enterprise environments. While MSTest may not have as many advanced features or the lightweight feel of XUnit, it still supports parallel test execution and data-driven testing.

For cross-browser testing, you can pair it with LambdaTest to ensure that your web applications work consistently across different browsers and platforms.