Digital Ocean's bandwidth pricing is pretty solid at $10/TB. It's pooled between droplets, too, so it's often cheaper to spool up a few droplets you're not using to get slightly better bandwidth prices if you use a lot. Sadly, I just missed out on being grandfathered in at free bandwidth, which would have been great for my PortableApps.com open source project. We'll be hitting 100 TB a month soon across all downloads.
It allows you to use Windows apps without needing to install them into Windows, so you can sync it between machines in a cloud folder like Dropbox/Google Drive, carry it on an external flash/hard drive, or use it on a machine you may not have install rights to. You can also keep separate copies of the same app for work and personal on the same Windows account. It's packaged as an app manager with a start menu, app store, automatic software updater, backup/restore functionality, etc.
On the technical side, we make use of an apps ability to direct where it stores its settings if it has one, and also move settings into/out of the registry and/or APPDATA on the local machine when needed. Our open source 'launcher' acts as a helper app to handle this for each app so it doesn't mess up a local version that's already there and so it adjusts paths if you move around between PCs and the paths to your apps or documents change.
