In computer jargon, to slipstream updates, patches or service packs means to integrate them into the installation files of their original software, so that the resulting files will allow a direct installation of the updated software.
If not directly supported by the software vendor, slipstreaming can be technically possible, depending on the updates, the structure and type of the program to be slipstreamed and of its installer, if any.
In Windows environments, it is common for system administrators to make slipstreamed installation sources of the operating system available on network shares. That greatly simplifies deployment for new installations. Microsoft also usually allows ordering slipstreamed CDs from their website. Newer versions of Microsoft products usually come either already slipstreamed or with a separate CD holding some updates.
