In 1990 just about every school had a mainframe with terminals around campus that were probably available from 8:00 Am to 8:00 PM then the mainframe did batch processing 8:00 PM to 8:00 AM. They probably had a small bank of modems for dial-in. The administrative systems were all made in house. Now the customers expect services like they find everywhere else and available 24/7 with 99.99% up-time. That’s expensive.