12. The non-transitory machine-readable storage medium of claim 11 , wherein the operations further include selecting the concrete types of resources based on a comparison between the abstraction of the type of the resource and types of actual instances of resources in the infrastructure environment.
12. The non-transitory machine-readable storage medium of claim 11 , wherein the operations further include selecting the concrete types of resources based on a comparison between the abstraction of the type of the resource and types of actual instances of resources in the infrastructure environment. 13. The non-transitory machine-readable storage medium of claim 12 , wherein the operations further include selecting the types of actual instances of resources in the infrastructure environment based on an availability of the actual instances of the resources.