---
title: What is client separation and why is it used?
description: Client separation makes it possible to map each client to a separate client on the same software system without the clients having mutual insight into their data. The separate processing of data colle
---

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# What is client separation and why is it used?

Client separation makes it possible to map each client to a separate client on the same software system without the clients having mutual insight into their data. The separate processing of data collected for different purposes is a legal requirement, among others by the General Data Protection Regulation (GDPR).

Technically, client separation can be implemented by several measures (also in combination):

- Separate data storage: Clients are separated at the database level, e.g. in the form of logical data separation.
- Separate environments: Clients are mapped by different physical or virtual systems.
- Client-specific encryption: The data is stored in encrypted form and the clients each receive an individual key. This method should be considered especially if there is a high need for protection.
- Application-side separation: The clients are logically separated at the level of the programme code. However, the German Federal Office for Information Security does not consider this method to be sufficient.

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