With Microsoft Power Apps, apps based on existing data, e.g. Excel, SharePoint, etc., can be created quickly with little code. In addition, other Microsoft services such as Flows can be used directly, which can automate data transfer, for example. Power Apps takes advantage of the fact that many companies work with Microsoft software and integrates it very well. MS Power Apps offers several integrations, including: SQL, Twitter, Oracle, Excel, Power BI.

Microsoft Corporation is headquartered in Redmond, USA. You can find out more about data protection in the Microsoft Power Apps data protection declaration:
https://privacy.microsoft.com/de-de/privacystatement