i. Evaluates the controls within an organisation's Information Technology (IT) infrastructure and Information Systems (IS), the practices and operations of IS, the safeguarding of the IT assets, the maintenance of data integrity and the design and operating effectiveness of key IT controls. ii. Provides quality information systems audit support to the auditing business units and specialized auditing business units. iii. Enhancing auditing capacity by building decentralized specialist capacity in IS audit to finalise audits timeously and respond to government's increased use of information systems. iv. ISA Business Executive Manager also pointed out that the ISA unit performed about 390 assignments in 2010 to 2011. The role of the ISA unit was to perform the following audits for the national, provincial and local governments: