Microsoft
MicrosoftHarry_van_Rijn
I wouldn't expect an impact on licensing (that would be more in the AHB realm). Keep in mind that savings plans, reservations, and hybrid benefit are 3 different things. Savings plans don't get stacked on top of RIs; instead, Azure will automatically use the cheapest method for you it can. So, if a savings plan and reservation both can apply to the same resource, the reservation will win. That being said, if your contractual PYG rate for a given resource is less than the savings provided by a reservation or savings plan, then your contract rate will win.
You can view savings plan expenditures in cost analysis: View Azure savings plan purchase transactions - Microsoft Cost Management | Microsoft Learn (this might also be of interest to you: View Azure savings plan cost and usage - Microsoft Cost Management | Microsoft Learn).
As far as VMs not using the savings plan; if its under committed at the moment, that may be why. If you have app services, containers, or other compute resources, they too can/will use the savings plan as they are able to.
It sounds like a bit more tweaking for your savings plans to increase them may be needed, but in either case, its AWESOME that you are already realizing the 32% savings!
