Just to add one more data point, we also use Canvas at my university. The deadline for submitting who are eligible (i.e. passed compulsory assignments and labs) to take the exam was yesterday, and I couldn’t meet that deadline because Canvas went down. I usually do corrections offline so I have backups of my own evaluations, but these are courses with many teachers and many TAs, so Canvas is the way we sync our assessments.

I guess what surprises me the most is that it’s even legal for schools to outsource the core of what they do to some random tech company.

Either way, they were under no obligation to adopt this garbage technology regardless of whether it’s available, so this is 110% on them.