In AWS, escrow refers to dedicated, isolated AWS accounts used by third-party model providers (like Anthropic or Cohere) to safely host their proprietary AI models. You access these models securely via Amazon Bedrock without ever transferring the model weights directly to your own AWS account.
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Where Are the Models Available?
Foundational and custom AI models are hosted in AWS regions supporting Amazon Bedrock. Some commonly used regions include:
US East (N. Virginia & Ohio)
US West (Oregon)
Europe (Frankfurt & Paris)
Asia Pacific (Tokyo, Singapore, & Sydney)
How Escrow and Amazon Bedrock Work
When you use a third-party foundation model in Bedrock, the service is designed with the following security guarantees:
Model Tenancy: The third-party model provider hosts their models and data in an isolated AWS environment, commonly referred to as their escrow account.
Access via API: Amazon Bedrock has the permissions necessary to route your API inference requests to the provider's escrow account.
Data Privacy: Your prompts, continuations, and training data are never used to train any of the base models. The model providers cannot access your Bedrock inference logs or your prompt details.
Network Isolation: All traffic between your environment and the escrow model passes securely over the AWS internal network.
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How to Get Started
To access these escrowed models, you need to enable them in the Bedrock console:
Open the AWS Management Console.
Navigate to Amazon Bedrock.
Go to Model access on the left menu.
Click Manage model access, review the terms, and check the models you want to enable (e.g., Anthropic Claude, Meta Llama, AI21 Labs).
Request access and wait for confirmation (usually granted instantly).
Once enabled, you can interact with these models using the Bedrock API or the AWS SDKs in your applications.
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