To me, the shining example of how brand experience and technology intersect is Apple. Apple's products are designed from a user centric point of view, at every level. The technology enables that experience to work accross the various touchpoints.

One of the best experiences I've had with Apple systems is a little tool called Migration Assistant. Migration Assistant can pull all of your applications, documents, settings, saved passwords, desktop backgrounds, music, etc. from one computer to another. I've used this 3 times to date - and as such; the Macbook Pro I carry today has files on it that started life on my PowerBook G4 which I purchased about 4 or 5 years ago. This migration is possible simply because Apple chose to use unix as the underlying operating system for MacOS X. All of an individual's settings and files live under their home directory. This means that relocating all of that is simply a matter of pulling an already collated glob of files from one machine to another. A simple task.

Time machine is another example of the same thing. Because MacOS is unix based, it's easily possible to use
hard links and filesystem structures to keep multiple backups in a space-efficient manner in the same way that Time Machine does. Indeed - functionality very similar to what time machine implements has been available using rsync for quite a long time (in fact; it was demoed to me about 4 years ago on Linux, although without the pretty UI.).

Apple have taken their architecture even further; the same technology stack that powers MacOS on the Mac line also runs on the iPhone, and the AppleTV. The use of strong and well-designed technical underpinnings allows companies like Apple to build solid brand experiences, and across multiple touchpoints.