Amazon SageMaker Feature Store introduces UpdateRecord for feature-level writes

Amazon Web Services (AWS) SageMaker Feature Store released new features on September 8, 2026, with the addition of the UpdateRecord API. This feature supports single calls to update one or more feature values without needing to read or rewrite the entire record, and is suitable for both standard (DynamoDB backend) and memory (ElastiCache backend) online storage layers. UpdateRecord can atomically merge changes and retain unmodified features, while automatically syncing the full snapshot to offline storage to ensure accurate training data. The API request requires specifying RecordIdentifierValueAsString and a list of Features (up to 100 features per call), with an optional TTL setting; if EventTime is updated, the new timestamp must be greater than the existing value otherwise the request will be rejected. This feature aims to address the read-modify-write issues caused by the traditional PutRecord mode…