Simplicité is a low-code platform from Simplicité Software SAS in France, intended for developing and running business applications. Users model, configure and connect their applications in a visual environment and operate them with oversight of alerts, logs and tasks. The vendor calls it an application platform as a service (aPaaS) that can run on any kind of cloud: private, public or on-premises. According to the site, the platform is independent of the technical infrastructure and can run on PaaS services or in containers such as Docker.
Simplicité Software SAS is based in Champigny-sur-Marne, France, and the site names no parent company. Because you can run the platform on your own cloud or in your own data centre, you decide where your application data lives. The site gives no location for the free test environment that the vendor hosts itself. The privacy policy only says that personal data of contacts is kept in the EU, in France. Ask for a data processing agreement before you place production data on an environment hosted by the vendor.