What is the scheduled task "\Microsoft\Windows\Application Experience\ProgramDataUpdater" on my Windows 8 computer?

"\Microsoft\Windows\Application Experience\ProgramDataUpdater" is a scheduled task on Windows 8 system added as part of Windows installation.

You will see "\Microsoft\Windows\Application Experience\ProgramDataUpdater" listed on Task Scheduler with the following information:

Name: ProgramDataUpdater
Location: \Microsoft\Windows\Application Experience
Description: Collects program telemetry information if opted-in to 
   the Microsoft Customer Experience Improvement Program
Actions: %windir%\system32\rundll32.exe aepdu.dll,AePduRunUpdate
Triggers: 
History: 

Programe file information about "aepdu.dll":

File name: aepdu.dll
File path: C:\windows\system32\aepdu.dll
File size: 604160 bytes
Last modified time: 7/25/2012 11:05:02 PM
File description: Program Compatibility Data Updater
File version: 6.2.9200.16384 (win8_rtm.120725-1247)
Company name: Microsoft Corporation

"aepdu.dll" is scheduled with no triggers.

It is recommended to keep "\Microsoft\Windows\Application Experience\ProgramDataUpdater" enabled as a scheduled task.

⇒System Scheduled Tasks on Windows 8

⇒⇒Windows 8 Scheduled Tasks