Enforcing Single-Region Data Residency for Claude Code on Amazon Bedrock
AWS ML Blog · rss · 2026-08-07
A US-headquartered global organization required its engineers to use Claude Code while ensuring that model inference, prompts, and intermediate processing remained strictly within London (AWS eu-west-2 Region) for compliance.
AWS outlines two paths for single-Region data residency:
- Mantle endpoint: A newer Bedrock API with native single-Region routing, but it currently lacks in-Region options for London.
- Classic Bedrock Invoke API: By creating an application inference profile paired with an IAM Region condition, requests can be successfully locked to the London Region, supporting Claude Opus 4.6 and Sonnet 4.6.
The post notes that cross-Region inference (CRIS) remains the best default for most workloads, and these single-Region patterns should only be applied when compliance strictly dictates a specific AWS Region.
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