# ColdFusion Services on Windows NT

By default, ColdFusion employs four separate services under Windows NT. The following table explains the purpose of each one.

ColdFusion Services on Windows NT
Service | Purpose
--- | ---
Bright Tiger Service | Manages ColdFusion Server load-balancing and failover. For more information about clustering, which enables load-balancing and failover in ColdFusion, see Chapter 6, "Creating Scalable and Highly Available Web Sites".
ColdFusion Application Server | The main ColdFusion Server service. ColdFusion pages cannot be processed if this service is not running.
ColdFusion Executive | Polls the ColdFusion Application Server service and automatically restarts the ColdFusion Application Server if it is not running.
ColdFusion RDS | The ColdFusion Remote Development Service provides security, directory and file browsing, and debugging services for ColdFusion Studio.
SiteMinder Authentication Service | Only present if you chose the advanced security option during ColdFusion setup. Provides user authentication services for advanced security.
SiteMinder Authorization Service | Only present if you chose the advanced security option during ColdFusion setup. Provides access authorization services for advanced security.

You can use the Windows NT Services Control Panel to view and manage these and other Windows NT services.