DPS supports the functions of the Australian Parliament and the work of parliamentarians through the provision of professional services, advice and facilities, the ongoing maintenance of Australian Parliament House (APH); and makes the building, and the important activity that takes place within it, accessible.

DPS provides services and products to support the functioning of the Australian Parliament, and the work of parliamentarians. Working in collaboration with the house departments, DPS provides, or facilitates the following:

• library and research services
• information and communication technology services
• security services
• building, grounds and design intent services
• audio visual and Hansard services
• art services
• visitor services
• food and beverage services
• retail, health, banking and childcare services, and
• corporate, administrative and strategic services for DPS.