Defining the geographic location where data is stored and processed, which may need to be inside a specific country under regulations or contracts.
Data residency means your app's data, especially personal and sensitive data, is kept on servers within a specific country or region. Some regulations require this or set conditions on transferring data abroad, and government bodies or sectors such as health and finance may require it in their contracts.
If your customers are government entities or large companies, or you handle health or financial data, the question where is the data stored will come up early. Knowing the answer, including for backups and third-party services, saves you surprises. Fanann offers in-region hosting. Practical tip: requirements differ by country and sector and change over time, so check the official sources in your country and consult a legal professional when needed. Read the data residency guide for the basics.