I've got a task to create a "tool" or deliver a solution which will allows users to create flows based on data input (xlsx, sql database, other- fell free to choose). I thought that maybe one of Azure apps will allow to help my clients? They want to have predefined columns in file like excel or database where they can put data. Single fill-in column will be a single step in flow. i.e columns import from: GB, import to: FR it should appears as GB->FR. Could you suggest any solution?