The Internet is a packet switched network. It has been designed specifically to withstand individual route failures. The most likely cause of multiple failures accessing a single web site and not others is a fault involving that site itself. E.g., the AZ web server, database server, DNS hosts, or network gear related to the site's infrastructure. It is less likely that the issue is on the customer end when multiple users with different computers, different routers, different access methods (cable, dsl, etc) are all experiencing the same problems. I would have to know the details of the AZ hosting and network infrastructure to be more specific, but this is the conclusion that basic troubleshooting points to.
And yes, I am a computer systems engineer.