A method of creating micro-segmentation policy for a network is provided. The method monitors the network packet traffic to identify network traffic types and patterns. The method, based on the network traffic types and patterns, identifies a set of components as an affinity group associated with each application. The method generates an application template that includes a set of application components for each application based on information provided by the vendor of the application. The method creates micro-segmentation policy for the network based on a mapping of the components of each affinity group into the components of the template generated for the associated application.