When I select Premium plan in Azure Pricing Calculator, I can see the Instances choice available (P1V3, P2V3, P3V3 etc).
However when I select Isolated or Isolated V2 plan, I could not easily find which instance Isolated Plan are based on.
Where is the instance details for Isolated and Isolated V2 App service plan are documented in Azure App Service pricing detail Docs?
Please refer MSDoc and Isolated Service Plan for more information.