A site is the server location of the files required by the ITS to start a service and drive an application. Most files are stored on the ITS server (AGate), but static Multipurpose Internet Mail Extension (MIME) files containing graphics, video and sound elements are stored on the Web server (WGate), so a site is really a combination of both these locations. Since the ITS server and the Web server can reside on different systems, a site must contain information about the system and the data location.

An ITS installation can consist of several ITS instances, each configured with one or more Web server / WGate components distributed across multiple AGate servers to support load balancing, so the SAP@Web Studio allows you to define multiple sites.

• During development, all the files that make up an ITS service are assigned to a project in the SAP@Web Studio
• At runtime, all the files that make up an ITS service must be located at the appropriate site, either on the ITS server or the Web server

The mechanism used to transfer files from the SAP@Web Studio to a site is known as publishing. When you publish files, they are located at one of two locations, as specified in the following table:

• For information about defining and managing ITS sites, see Managing ITS Sites
• For information about specifying the active site, see Specifying the Active ITS Site