What is the purpose and role of the 'cmd' folder in your project structure?

In a Go project structure, the cmd folder typically contains the source codes for executable applications (commands). Each subfolder inside cmd corresponds to a separate command or binary that can be built.

For example, if you have a project with two applications — a server and a client, the structure might look like this:

cmd/
  server/
    main.go
  client/
    main.go

This helps to separate different entry points into the program and simplifies managing large projects with multiple executable files.