Comment by Junk_Collector

From what's described in the article they are using it to write the process code. That is, control code for setting the states of the SOC under test and the test equipment, then recording the data that the test equipment would measure. It can be a pain to do because each SOC and piece of test equipment might have it's own control language, drivers, different data formats, etc. This usually all has to tie back in to a local (self hosting is the norm) cloud service for quality tracking and some 3rd party enterprise software from companies like Cadence. The test equipment would be something like a Keithley Parametric wafer tester, which is actually an entire rack of equipment glued together by 3rd party code with semi-open APIs. It's not uncommon to make thousands of measurements on an SOC during verification and then process engineers work to reduce the measurement count to just the critical ones for manufacturing.