A bank's fraud investigators close several hundred cases a week. Every case already carries a decision recorded in the case management system, and the analyst adds rough working notes as they go. The bank wants a managed AWS service that takes those structured case facts together with the analyst's notes and drafts the written case narrative in the bank's house style, where tone and length are adjusted by changing the instruction rather than by retraining a model. Which AWS service meets this requirement?
- A.
Amazon Fraud Detector, the fully managed service that trains on the bank's own historical fraud event data and returns a fraud score plus a rule-driven outcome, such as approve or send for review, for each online event that it evaluates.
- B.
Amazon Textract, which extracts printed and handwritten text along with forms and tables from scanned documents and returns them to the calling application as structured data.
- C.
Amazon Bedrock, which gives managed API access to foundation models, so the case facts and the analyst's notes go into a prompt and the drafted narrative comes back, with style changed by editing the instruction.
- D.
Amazon Comprehend, which applies natural language processing to text that already exists in order to detect entities, key phrases, personally identifiable information, dominant language and sentiment.
Show answer
Answer: C
Only Amazon Bedrock generates new prose from a prompt; the fraud-specific service scores events, and the other three analyse, extract from, or speak text that already exists.
- A. Amazon Fraud Detector detects potentially fraudulent activity such as unauthorised transactions and fake account creation by scoring events against a model trained on your fraud history. Its output is a score and an outcome, never written prose. AWS also closed it to new customers in November 2025 and points new work at SageMaker, AutoGluon and AWS WAF.
- B. Amazon Textract lifts printed and handwritten text, forms and tables out of scanned documents. It could digitise a handwritten note as an input step, but it generates no narrative of its own.
- C. Amazon Bedrock provides managed access to foundation models through an API, which is the only option here capable of generating the narrative text, and prompt instructions control tone and length without retraining.
- D. Amazon Comprehend extracts insight from documents that already exist, returning entities, key phrases, PII, language and sentiment. It analyses text rather than producing any, so it cannot draft the case narrative.