Why device applications should be packaged?

Why should be device applications packaged like described here :

I could copy the exe file in to the file system of my mdt and start it from there. Everything works. So why the packeging into the cab files???

Regards

Solution

CAB (device) is essentially the same as MSI (windows), they are both used for the installation of software (applications).

I think the real question here is:

What is an installer?

To quote wikipedia:

Common operations performed during software installations include

Making sure that necessary system requirements are met
Checking for existing versions of the software
Creating or updating program files and folders
Adding configuration data such as configuration files, Windows registry entries or environment variables
Making the software accessible to the user, for instance by creating links, shortcuts or bookmarks
Configuring components that run automatically, such as daemons or Windows services
Performing product activation
Updating the software versions

Read more about installation (computer programs) at wikipedia: