Hello, i own a web server running windows (WAMP). I want to know the best way to implement a Rest API (a very simple one) in order to let a user do something.

Diagram flow:

I have programming skills, in fact, i developed some time ago a web server in VB6 who process the querys and when it find the command (http:/serverIP/webform.php?cmd=run&item=any) it do something, but know i really want to develop a solution using the WAMP server.

Some people consider the solution of executing a exe when a command is detected a bad solution for security issues, but this specific proyect i have is for the use of only some people (trusted people) who dont have intentions of hacking the server.

So, what do you think?

Remember:

1. Its not a public API, its for some people and some programs who will use the API
2. Its a very simple one, only one command using POST or GET.

Thanks