Abstract: Methods, computer program products, and systems are presented. The method computer program products, and systems can include, for instance: training a machine learning model in dependence on traffic between at least a first service and a second service defining an application; querying the machine learning model; generating service characterizing data that characterizes at least one service defining the application, wherein the generating the service characterizing data is in dependence on the querying of the machine learning model; and modifying a performance attribute of the application in dependence on characterizing data of the service characterizing data.