Some embodiments provide a method for a network management and control system that manages a virtual infrastructure deployed across a plurality of sites. The method receives a definition of an application to be deployed in the virtual infrastructure. The application definition specifying a first set of the sites at which to deploy the application. Based on the definition of the application, the method assigns the application to a set of security zones defined for the virtual infrastructure. Each respective security zone is restricted to a respective set of the sites. The method deploys the application in a second set of sites based on the first set of sites and the sets of sites to which the set of security zones are restricted.