The article delves into the benefits and complexities of using monorepos to manage multiple interrelated software projects within a single repository, emphasizing the efficacy of the Nx build tool. It outlines how monorepos provide centralized management, enhance collaboration, and streamline release synchronization, while also highlighting the challenges they present, such as the need for specialized tools to handle interdependencies. Nx, a tool from Nrwl, is showcased for its integration capabilities with various frameworks and languages, offering features like caching, affected mechanisms, and extensibility through plugins. The article further guides readers through setting up a monorepo with Nx, detailing its advantages in terms of integration, task handling, and introspection tools, although it notes limitations in language support and build introspection compared to other tools like Bazel. The tutorial includes practical steps to create and manage a monorepo using Nx, illustrating the process with examples of React and Node.js projects, while also touching on alternative tools like Earthly for projects that extend beyond JavaScript or TypeScript.