A/B Testing

Flagsmith

UKUnited KingdomVerified June 2026

Vendor site

Open-source feature flag and remote configuration.

Detected by domain patterns

flagsmith.comedge.api.flagsmith.com

European alternatives

This vendor is already Europe-based.

GDPR & Data Residency

Flagsmith is UK-based. The European Commission renewed its adequacy decision for the UK under GDPR in December 2025, meaning data transfers to the UK are currently treated similarly to intra-EU transfers. Adequacy decisions are time-limited and reviewed periodically, so verify the current status before relying on it for new contracts.