To determine how data are accessed across different platforms in a heterogeneous environment, an IS auditor should FIRST review:

A. business software.

B. infrastructure platform tools.

C. application services.

D. system development tools.

Explanation:

Projects should identify the complexities of the IT Infrastructure that can be simplified or isolated by the development of application services. Application services isolate system developers from the complexities of the IT infrastructure and offer common functionalities that are shared by many applications. Application services take the form of interfaces, middleware, etc. Business software focuses on business processes, whereas application services bridge the gap between applications and the lT Infrastructure components. Infrastructure platform tools are related to core hardware and software components required for development of the IT infrastructure. Systems development tools represent development components of the IT infrastructure development.