YugabyteDB is a distributed SQL database that is compatible with PostgreSQL. It supports stored procedures, triggers and extensions, and shards data automatically across nodes. Development and platform teams use it for transactional applications that need to stay available. You can run the open-source software yourself, use the managed service YugabyteDB Aeon, or deploy the database on Kubernetes in your own VPC, data centre or a fully air-gapped environment. Aeon runs on AWS, Microsoft Azure and Google Cloud.
Yugabyte is a US company headquartered in Sunnyvale, California, so its managed service falls under US jurisdiction, including the CLOUD Act. The database itself is released under the Apache License 2.0. A European organisation that runs YugabyteDB on its own infrastructure or with a European provider decides where the data resides and who administers the environment. With Aeon, the cloud region chosen on one of the three US hyperscalers named above also determines where the data is stored.