A problem program, system software and middleware are three different types of programs, as follows: Problem Program: This program applies the computing powers provided by system software in order to do a specific task. System Software: This program is responsible for providing those computing powers. Middleware:This program serves the problem program and is served by the system software. The relationship between all three software program types is much like the relationships binding employees of a firm: The firm managers prepare the suitable environment and system of operations, just like the system software. Team leaders work more specifically on the environments of their teams, like middleware. The team member each does specific tasks, which are added to those tasks performed by the rest of the employees to result in a certain product or service, like problem programs.