Squidex is an open-source headless content management system with REST and GraphQL APIs, published on GitHub under the MIT licence. Developers use it to store structured content and deliver it to websites, apps and other services. An organisation can run it itself with Docker, prebuilt binaries or Helm charts for Kubernetes, or use it as a hosted service at cloud.squidex.io.
The project page names a core team member based in Germany. The vendor names no legal entity behind the hosted cloud, and the hosting location and provider of that service are not stated. An organisation considering the cloud option should therefore first ask about the data region and sub-processors. Self-hosting is the stronger sovereignty option: the MIT licence allows the code to be run, audited and modified on infrastructure in the EU, and the organisation decides where its content is stored.