It's called the Applet Cache. No installation effort is to do on the spot.
All administration is possible from a central place.
For better availability take ours instead of any hardware. The AC is a nice kernel in kiosk systems. You can configure and administrate them over the telecommunication line and push content on it without leaving your office. In an corporate network the AC may be a part of middleware components. Especially in branch offices you will be able to minimize traffic and increases performance for local users.