What CPU is Azure App Service running on?

Question

What processor is Microsoft App Service V1 running on?

V2 seems to be running on Dv2-series VMs:

"The new Premium V2 tier features Dv2-series VMs with even faster processors, SSD storage, and double the memory-to-core ratio compared to the previous compute iteration." https://azure.microsoft.com/en-us/blog/azure-app-service-premium-v2-in-public-preview/

However, what is the corresponding VM, CPU or performance of the previous compute iteration? What would (roughly) be the CPU performance difference between P1 and P1V2 (or for example between a 4-core P3 and a 2-core P2V2)?

Edit According to this article - https://cloudspectator.com/microsoft-azure-dv2-vs-ds-comparison/ - Dv2 would be roughly 35% faster than Dv1 which would be roughly 60% faster than A (https://cloudspectator.com/wp-content/uploads/report/generational-performance-comparison-microsoft-azures-a-series-and-d-series.pdf) which is used in the V1 app services as stated in the accepted answer

Answer 1

Basic, Standard and Premium V1(including V1 App Service Environments) run on A series VM's.

Premium V2 and Isolated Sku(App Servicement Environment V2) run on Dv2 series machines.

Answer 2

If anyone considering Azure Service Plan and confused to use A-Series (S,S2,S3) or Dv2-Series (P1V2, P2V2, P3V2), should consider Dv2-Series. In Simple Dv2-Series are said to be double or more resources (CPU, RAM and storage) and better performance. Please refer to article Announcing pricing decrease for Azure App Service on the Premium plan for more details.

With the new price reduction, it is more economical from a performance perspective (and more powerful!) to run a P1v2 App Service plan rather than an S1 App Service plan. This is also true for the other size plans when moving from S2 > P2v2 and S3 > P3v2, with each providing double the performance and memory of the comparable Standard plan. This can be seen in the green arrows in the image above.