Product:
Anything tangible, such
as a train, a manufacturing plant, a dam, a new equipment, or a new
software program.
Service: Can be the establishment of a new process, a procedure, or setting up a new department or branch in your organization.
Example of a Program:
The development of a new airplane is a project in itself, but since the project can last approximately 10 years and planes will be sold to different customers who will customize the interior for their needs, it is better described as a program.