AWS Enforces Single-Region Claude Code on Amazon Bedrock for Data Residency in London

Summary:AWS has introduced a solution to ensure that all AI inference using Claude Code is strictly processed within a specified single AWS region (London) on Amazon Bedrock. The solution offers two paths: native single-region routing via the Mantle endpoint or using an application inference profile with an IAM region condition on classic Amazon Bedrock. The article also explains how to verify compliance and provides configuration guidance for different regional requirements.

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AWS Enforces Single-Region Claude Code on Amazon Bedrock for Data Residency in London

Global organizations are facing increasing regulatory pressure regarding data residency, and AWS has responded with a new solution to ensure that all AI inference using Claude Code is strictly processed within a specified single AWS region (London) on Amazon Bedrock.

Core Implementation Paths

AWS offers two paths to achieve this:

1. Mantle Endpoint Path: Applicable to the seven regions that support Mantle (Ireland, Stockholm, Tokyo, Melbourne, US East (N. Virginia), US East (Ohio), and US West (Oregon)). Users can configure environment variables and set IAM region conditions to enable native single-region routing without creating additional inference profiles.

2. Classic Amazon Bedrock Path: For regions that do not support Mantle (e.g., London), users need to create an application inference profile that points Claude Code to the London foundation model ARN and use an IAM region condition to restrict requests to the London region.

Technical Highlights

• Mantle Endpoint Advantage: No need to create inference profiles for single-region routing and supports newer models like Claude Sonnet 5.
• Classic Amazon Bedrock Path: Suitable for the London region but requires creating application inference profiles and only supports Claude Opus 4.6 and Sonnet 4.6 models.
• IAM Region Condition: Ensures data residency compliance by restricting requests to the target region through IAM policies.

Verifying Compliance

AWS recommends using AWS CloudTrail to verify that data processing is strictly confined to the specified region:

• Classic Amazon Bedrock Path: Query InvokeModel events to ensure the awsRegion field matches the target region.
• Mantle Endpoint Path: Enable bedrock-mantle data events and query CreateInference events in CloudTrail Lake to verify the awsRegion and model fields.

Developer Recommendations

• Choose the Right Path: Select the appropriate implementation path based on the target region.
• Monitor Model Availability: Regularly check the Amazon Bedrock model cards for the latest regional and model support information.
• Optimize Configuration Management: Use a centralized settings file to manage environment variables for consistency and maintainability within the team.

Industry Impact

AWS's solution provides global organizations with more flexible and secure data residency options, particularly in industries with stringent data regulations (e.g., finance, healthcare, and government). By offering two distinct implementation paths, AWS can cater to different regional and model requirements while ensuring the security and compliance of AI inference processes.

Developer Recommendations

For developers, AWS advises:

• Assess Regional Needs: Choose the implementation path based on the target region.
• Stay Updated on Model Availability: Regularly review Amazon Bedrock's model cards for the latest regional and model support.
• Optimize Configuration Management: Use a centralized settings file to manage environment variables for consistency and maintainability within the team.

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Source: AWS Machine Learning Blog (2026-08-06)

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Tags: #AWS #Amazon Bedrock #Claude Code #Data Residency #AI Inference