E3 can be executed on Windows 7 SP1, Windows 8, Windows 8.1, Windows 10, Windows 10 Enterprise LTSB or LTSC, Windows Server 2008 R2 SP1, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, or Windows Server 2019 platforms, using some features available in these operating systems. Its graphical user interface can also execute on Internet or intranet via Internet Explorer.

Basic software functions are divided into independent modules, which can process specific activities. Information traffic management among all modules is coordinated by a main module (E3 Admin), using a technology based on distributed objects, allowing components to execute either on the same machine or on other computers.

Briefly, E3 consists of a kernel responsible for binding and coordinating the work of several other modules, which are also information servers. From this point on, the graphical user interfaces are generated, which are available via either local or Internet clients.

E3 contains four main programs, described on the next topics.