Glossary
Zero Data Retention (ZDR)
A contractual and technical arrangement with an AI provider whereby data submitted to the model is not stored, logged, or used for training after the inference request is complete.
Zero Data Retention (ZDR) is a policy and technical arrangement — typically provided by enterprise AI providers — where data submitted for AI inference is not stored, cached, or used for model retraining after the inference is complete. The response is generated and the input is discarded.
Why this matters for legal data
For law firms, ZDR is a minimum threshold for any AI provider handling client matter content. Without it, every document pasted into an AI tool is potentially retained in a data store controlled by the provider — outside the firm's ability to audit, delete, or control. LegalScout's use of AWS Bedrock provides this protection by design: inference happens within the managed AWS environment and matter content is not retained by the model provider.