A DevOps engineer is building a multi-stage AWS CodePipeline that requires a manual approval step between test and deploy. The development team uses a custom chat tool that accepts webhooks and requires near-real-time pipeline status and approval notifications. How should the engineer configure notifications so pipeline state changes and approval requests are posted to the chat tool?

The correct solution leverages EventBridge for robust event matching and SNS for fan-out, with a Lambda function to handle the custom chat integration. EventBridge is the ideal service for reacting to AWS service events like CodePipeline state changes. Publishing to an SNS topic allows for multiple subscribers if needed in the future, and a Lambda function provides the flexibility to format the message and post it to the custom chat tool's webhook URL. Incorrect options: CloudWatch Logs subscriptions are for log data, not directly for service events like pipeline state changes, making it an inefficient and less direct approach. CloudTrail events are for API activity logging, not real-time pipeline state changes, and triggering Lambda directly from CloudTrail for this purpose is less efficient than using EventBridge. Modifying each pipeline to send events directly is not scalable or maintainable, as it requires changes to pipeline definitions and lacks a centralized event-driven architecture.