One of the biggest challenges of building a full-stack web application is managing complexity; if you're building a serious product, you likely have multiple front-end applications that communicate with a back-end that share interfaces with multiple team members that need to collaborate efficiently.

Nx is a tool that can dramatically simplify the way you organize tests and share code between multiple JavaScript applications.

The tool itself is based on the best practices developed at Google to scale thousands of applications across thousands of developers in a single mono repo, but you don't need to be operating at Google scale to see the benefits of NX, it can be a very powerful tool for projects of all sizes and not just angular but full stack javascript.