Links
https://www.ibm.com/think/topics/data-centers
https://www.digitalrealty.com/resources/articles/a-brief-history-of-data-centers
https://www.nps.gov/subjects/nationalhistoriclandmarks/site-of-the-first-telephone-exchange.htm
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://s-media.nyc.gov/agencies/lpc/lp/1747.pdf
https://www.lenovo.com/us/en/glossary/packet-switching/?orgRef=https%253A%252F%252Fwww.google.com%252F&srsltid=AfmBOoqN1pWl88PhH6E4TfqGNMhgni9BlgKH8_ufkA2OCe73J9ekQSKK