What information do you collect when creating an IT system analysis report?

"When preparing an IT system analysis report, I seek data which will enable me to detail the operational specifications of the entire information technology environment. I start by describing the organization's functional activities and the business processes and procedures used to manage their operations. I then analyze the data flow, business scenarios, and how the employees, partners, and customers interface with their IT system. I complete the analysis by creating a comprehensive inventory of the organization's IT assets, including hardware, software, and data."