As it is known the Government of Federal Democratic Republic of Ethiopia has been allocated huge amount of budget for universities’ to ascertain the countries development through education that supported by science and technology with some specific center of excellencies. Having this, the internal audit service directorate has a great responsibility to support and ensure existence of proper handling and utilization of public resources in the university.
To do the aforementioned activities ASD together with the university community expected to:-
o    Ensure execution of approved budget in contrast with the intended purpose of the university
o    Ensure the application of contemporary internal audit system in the university and its parts
o    Provide advisory and consultation service for management and working units
o    make sure the existence of economic, efficient and effective utilization of resources (Property, Financial and Human) in the university
o    Assure whether activities that carried out in the university comply with government rules, regulations and directives or not
Mission
The mission of ASD is to realize and assure economic, efficient and effective utilization of government resources through the provision of quality audit to support the industrial and socio-economic development of the nation and ASTU as well.
Vision
The vision of internal audit is to support the core issue that to make ASTU to be the first choice as one of the recognized premier center of excellence in applied science and Technology in Africa by 2025.
Values
Audit service directorate is committed to being an ethical in recognition of the rights and inherent dignity of all members of its staffs and university community.  Below are the bedrock values of audit service directorate. These principals shall be held in the highest regards at all times and form the basis of our actions and interactions. Thus ASD core values are:
•    Professional ethics
•    Responsiveness
•    Transparency and accountability:
•    Nurturing diversity
•    Sense of belongingness and ownership
•    Originality and innovativeness