graph TD;
Zoolo[<a href='/GDCh-de/docs/blob/main/Zoolo.md'>Zoolo</a>] --> |Eingangsrechnungen| DATEV
ZAM[<a href='/GDCh-de/docs/blob/main/ZAM.md'>ZAM</a>] --> Meta-Dok[<a href='/GDCh-de/docs/blob/main/Meta-Dok.md'>Meta-Dok</a>];
ZAM --> Sage[<a href='/GDCh-de/docs/blob/main/Sage.md'>Sage</a>] --> |Ausgangsrechnungen| DATEV[<a href='/GDCh-de/docs/blob/main/DATEV.md'>DATEV</a>];
Ventari[<a href='/GDCh-de/docs/blob/main/Ventari.md'>Ventari</a>] --> Sage;
Hygraph <--> Cron[<a href='/GDCh-de/docs/blob/main/CRON.md'>CRON</a>];
Hygraph <--> Brevo[<a href='/GDCh-de/docs/blob/main/Brevo.md'>Brevo</a>];
Hygraph[<a href='/GDCh-de/docs/blob/main/hygraph.md'>Hygraph</a>] --> Auth0[<a href='/GDCh-de/docs/blob/main/Auth0.md'>Auth0</a>] --> App[<a href='/GDCh-de/docs/blob/main/App.md'>App</a>];
Hygraph <--> App;
ZAM --> Hygraph;
Hygraph --> OpenData[<a href='/GDCh-de/docs/blob/main/OpenData.md'>OpenData</a>] --> Website[<a href='/GDCh-de/docs/blob/main/Website.md'>Website</a>];
NCh[<a href='/GDCh-de/docs/blob/main/NCh.md'>NCh</a>] --> |XML| Hygraph;