After reading this, it seems the headline is a bit misleading.
The Microsoft blog post states:
"We have seen a 775 percent increase of our cloud services in regions that have enforced social distancing or shelter in place orders."
So it's not an overall increase, just in certain regions?
Yes, and they also say that if you're hitting quotas, you can try another less congested region. If you have established workloads in a region though, I'm not sure how quickly you can migrate a complex interplay of services to another region-- are there simple tools to do so in Azure?
I doubt they’re talking about their compute services. The increases are more likely in Microsoft teams and Office 365. And as far as I know you can’t choose a region for those services.