Click2Run uses Dynamic Feature Prioritization with App-V technology; the first 5-10 percent of the download is the App-V agent, and after the agent is ready, Office shortcuts appear on the desktop.
By clicking a shortcut, such as Word 2013, the main Word features are then downloaded immediately.
If more specific features are requested that have not yet been downloaded (such as mail merge), Click-toRun will stream these on demand.