What is "SSDP Discovery" in my Windows 7 service list? And how is "SSDP Discovery" service related to SSDPSRV.dll?

"SSDP Discovery" is a Windows 7 service that "Discovers networked devices and services that use the SSDP discovery protocol, such as UPnP devices. Also announces SSDP devices and services running on the local computer. If this service is stopped, SSDP-based devices will not be discovered. If this service is disabled, any services that explicitly depend on it will fail to start." "SSDP Discovery" service is provided by SSDPSRV.dll DLL file.

Detailed information on "SSDP Discovery" service:

Service name: SSDPSRV
Display name: SSDP Discovery
Execution command: 
   C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
Start type: Manual
Service status: Started
Dependencies:
   HTTP

"SSDP Discovery" service is provided by a DLL file called: SSDPSRV.dll:

Name: SSDPSRV.dll
Location: C:\Windows\System32\SSDPSRV.dll
Description: SSDP Service DLL
File version: 6.1.7600.16385
Size: 159 KB (162,816 bytes)
Modified: Monday, July 13, 2009, ?9:16:15 PM

Disabling "SSDP Discovery" service should not cause any issues when running Windows 7 system.

⇒'svchost.exe -k LocalServiceAndNoImpersonation" Services on Windows 7

⇒⇒Windows 7 Services Tutorials