How does a website related to stock exchange works?

I need help, bit in detail though shorter the better.

I would like to know how these websites related to stock exchange work?

Do they connect to stock exchange server directly or there is some other way?How does a website related to stock exchange works?Yes, they keep on updating their website EVERY SECOND !!!!!



THERE ARE THOUSANDS OF EMPLOYEES SITTING ON COMPUTERS UPDATING THE ENTIRE DATA.



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