My company migrated to Azure few years back. They can give good bulk discounts but on the flip side the experience with some of their infra and AKS has been choppy at times, with the support team taking time to fix or rca h/w issues. They do come back though. Would love to know how does it compare to long term experiences with other major cloud providers.
I've been with all 3 major and Azure is the only one that even feels like it has support. Even so, unless you are a big customer on some special agreement, you aren't going to get any red carpet treatment. We pay for the $100/m support plan right now and it's pretty goddamn mediocre. Maybe submitting tickets for "legacy" AD domain services outages doesn't touch the rockstar support team these days. Support quality is probably variable across product team at some level.