Creating a CLI application to facilitate the building of projects for various operating systems and architectures is an essential skill for developers working with Go. This task involves several stages, starting from a simple implementation and progressing to more complex features. The application should utilize the `go build` command with the `-o` flag to generate binaries, handle different output directories, and support specific naming conventions, especially for Windows binaries that require the `.exe` extension. Key strategies include using the exec command to run builds and parsing the Go distribution list, preferably in JSON format, to manage OS and architecture pairs efficiently. By completing this exercise, developers will enhance their command-line interface skills and gain practical experience in cross-platform building processes, setting the stage for further exploration of advanced topics like CGO integration.