This pattern deploys an Amazon API Gateway REST API with response streaming enabled, backed by an AWS Lambda function that streams responses from Amazon Bedrock (Claude) in real-time using Server-Sent Events (SSE).

When a client sends a prompt, API Gateway forwards it to a streaming Lambda function. The function invokes Amazon Bedrock and progressively writes each text chunk to the response stream. The client receives tokens as they are generated, dramatically reducing time-to-first-byte.

This pattern is ideal for building AI chatbots, copilots, and interactive assistants where real-time streaming improves user experience.