General user of the system
General vendor of goods that will sell their goods or services via the system.
Service management will run and administer the system from an operational perspective.
The department responsible for ensuring security of the application and application data.
The marketing department. The marketing department not only have a say in how the product should look and feel, how it should be portrayed, but they are also very keen that certain aspects of the product (such as usability and security) do not detract from the product's reputation.
The business leaders in ACME Plc.. They have a vested interest that ACME Online is delivers improved functionality and streamlines the sales ordering process.