1.) Repeatability. Installations can be reliably installed to a consistent standard and configuration.
2.) Applications can be harmonized to work together in a controlled environment.
3.) Corporate standards can be enforced, allowing compliance goals to be achieved.
4.) Deployment of applications through Active Directory, SMS, Zen, Tivoli, Altiris, Mariba etc.
5.) The facilitation of and upgrade path using Windows installer.
6.) The ability to patch installations, to include bug fixes and minor modifications.
7.) Customised installations, tailored to you exacting requirements.
8.) Produce deployable packages to locked down environments.
9.) Packages produced correctly for Windows Installer will self-repair, which makes them resilient.
10.) Clean Uninstall ensures the integrity of the target desktop is maintained.
11.) Rollback in the event of installation failure to the original system state.
12.) Reboots can be scheduled or totally suppressed to prevent unexpected system restarts.
13.) Install on demand,  provides an icon to a feature, but does not install it until the user clicks on it.
14.) Advertisement is similar to above, except that nothing is installed until the user clicks on a icon.
15.) Merge Modules aid component and conflict management and accelerate the production of new packages.