title: Using If/Else in Arm Templates
body: <p>I have an ARM that automates the build of a multi-VM environment.  I hope to ask the user to define SMALL/MEDIUM/LARGE in terms of the size of the environment.  The template will then decide types of VMs base on the value of environment size.   For example, if the size = 'SMALL', the vmSize  = 'Standard_E2s_v3', else if  size = 'MEDIUM', then vmSize = 'Standard_E8s_v3', else if size = 'LARGE' then vmSize = 'Standard_E16s_v3'.     How can I do that?</p>
  <p>Do ARM Templates even support if/else statements?</p>