Componentized

Windows Embedded Standard 7 is split into many feature packs allowing you to customize your Windows installation to your needs.

Feature Packages

There are more than 100 feature packs included which can be selected in the Image Build Wizard (IBW) and Image Configuration Editor (ICE).

Change Features at Runtime

If you have setup your image and notice that you have forgotten an important feature (e.g. the Internet Explorer) you can easily add it to the running image by using DISM.
DISM (Deplyoment and Image Sevrving Management) allows you to add and remove feature packages at runtime or even when the image is not running (offline).
A howto can be found here.