i am interested to know about the tech stacks of the website i.e., how the data is displayed
Architecture briefly explained here: https://accelconf.web.cern.ch/ica05/proceedings/pdf/O3_005.p...
I also want to mention EPICS which is used by quite a few physics and telescope projects: https://epics-controls.org/epics-users/projects/
When CERN Was looking at software they found EPICS wasn't up for the task at the time: https://cds.cern.ch/record/532705/files/ma1o06.pdf
Many old monitoring programs just literally generated graphs like these using input data and outputted a static image on a cron/tick. "Expensive" once, then cached... in the form of the image
I'm guessing this is that sort of tech