ServiceDesk Plus - Youtube URL

ServiceDesk Plus - Youtube URL

Hi,
I have noticed whenever I open/close refresh a request in servicedesk the webpage hangs for a few seconds and various external URL's are hit? I usually notice the page makes a request to www.youtube.com:443
Can anyone explain why this is happening and what purpose it serves? I can see the hits in our proxy server generally one for every transaction in servicedesk? is this a form of tracking? why youtube?

Thanks,
Tony

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