AWS AppConfig is an Amazon Web Services offering, a capability of AWS Systems Manager, that lets teams change application behaviour in production without redeploying code. It supports feature flags, gradual or instant configuration deployment and experiments such as A/B tests. Integrations with services including Amazon CloudWatch, Datadog and Dynatrace allow a deployment to be rolled back automatically when thresholds are breached. It is a managed cloud service, available through the console and APIs.
AWS is a subsidiary of Amazon, headquartered in Seattle in the United States, and is therefore subject to US legislation such as the CLOUD Act. The service is available in many regions, including Frankfurt, Ireland, Paris and Stockholm, and customers choose where their data is stored. For the GDPR, AWS points to its Data Processing Addendum and standard contractual clauses. A European organisation can therefore control data location through a European region, while the provider remains American.