Office 365 applications often need to connect o on premise data.Microsoft has recently introduced an on-premise data gateway. Customers can now connect on premise data like SharePoint lists or SQL rows to e.g. PowerApps, Microsoft Flow, Logic Apps, Power BI.
The on-premises data gateway acts as a bridge to provide a quick and secure connection between on premise data and Office 365 apps. Currently supported on premise applications are SharePoint 2016 and SQL 2016 (Both Enterprise and Express editions).
Use a single gateway to connect multiple on premise applications to multiple Office 365 applications at the same time and it is dependent on the account with which you sign in, which can be either your work or school, or personal Microsoft account.
