A computer-implemented method for determining service flow rank based on service flow dependency is provided. The method includes receiving a plurality of data flow information for a plurality of data flows. Each data flow of the plurality of data flows includes a source, a destination, a start time, and an associated service. The method also includes determining a plurality of dependency sets based on the plurality of data flow information. Each dependency set of the plurality of dependency sets includes at least a first data flow and a second data flow. The method further includes calculating a plurality of dependency strengths based on the plurality of dependency sets, calculating a plurality of total service scores based on the first data flows of the plurality of dependency sets, and calculating a plurality of service flow ranks based on the plurality of dependency strengths and the plurality of total service scores.