The article explores the integration of Bazel and Node.js to enhance build automation for software projects, detailing a step-by-step guide on setting up a Bazel environment, implementing a simple calculator application, and deploying it on a web server. Bazel, an open-source build tool, is highlighted for its ability to expedite builds and tests in large projects, while Earthly is mentioned as a complementary tool that simplifies build processes through robust caching. The guide includes creating a Bazel workspace, configuring builds and dependencies, implementing testing with Jasmine, and running a Node.js application using Bazel, ultimately demonstrating the combined utility of Bazel with Node.js for efficient software development. Additionally, Earthly is presented as an alternative build automation solution, offering a framework for building, testing, and containerizing applications by leveraging container technology.