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A frequently asked question about rolling out Azure VNet with different subnets in a infrastructure as code environment is where and how to define the subnets in your Azure ARM template. In the most examples online the number of subnets is configured in the template and the name and addressPrefix is configured in the parameter file. The big disadvantage with this scenario is that when you deploy a VNet with for example two subnets and later you decide to add more subnets you have two choices both of which are uncomfortable for an Infrastructure as code release pipeline. (more…)