At the end of the day, this is an issue of terminology. You can say "service X requires service Y to start" or you can say "once service Y has started, start s

At the end of the day, this is an issue of terminology. You can say "service X requires service Y to start" or you can say "once service Y has started, start service X." In both cases you can draw a dependency graph with an edge going from Y to X.