Depending on the scope of your analysis, you can choose to build an overview of the information system architecture, or you can detail a part of it: for example, in a general overview you can indicate the methods of communication used between the different sites in your organization; in a detailed view, you can focus on one specific site to describe the technical infrastructure of this part of the information system.

The global view of an information system maps the geographical locations of the organization and shows communication between sites. This approach highlights the networks and servers used, as well as the applications and databases that send or receive information.

The detailed approach focuses on describing a specific site, in order to analyze and represent the technical infrastructure of the local information system and its main links with its environment. This type of approach highlights local area networks, the servers where the applications and databases are located, the connected workstations, and the peripherals used (printers, modems, etc.).

The detailed approach also allows you to describe a specific local area network, all the connected hardware, and all installed applications and databases.