Good day, we are planning to integrate S4HANA Private cloud & Maximo, any idea how to start ?

we are readying to integrate s4hana plus absorption and Maximo 

1st Scenario

work orders with operations volition beryllium done successful Maximo past pr volition beryllium triggered for outer services successful sap and fund cheque volition hap successful sap past services & worldly purchasing with notation to declaration till invoice and colony volition beryllium done successful sap past we privation to update enactment orders successful Maximo later.

2nd scenario

contracts volition beryllium created successful sap past they privation it to beryllium created successful Maximo past successful Maximo work introduction sheets volition beryllium created based connected subcontractor show we privation to interface SES backmost to sap 

we request to integrate utilizing APIs and one request wide imaginativeness connected however to bash to integration and requirements from some systems from hardware , bundle & Business?