AWS Lambda now offers improved observability for Kafka event source mappings, allowing users to monitor event polling, scaling, and processing with Amazon CloudWatch Logs and metrics. This enhancement helps troubleshoot issues quickly, reducing operational overhead and mean time to resolution. It's available for both Amazon Managed Streaming for Apache Kafka and self-managed Kafka setups.

Set up the Tansu broker using SQLite on an AWS t3.micro instance, taking advantage of the AWS Free Tier. The guide covers installation, configuration, and performance testing, demonstrating how to launch a low-cost Kafka-compatible broker for early-stage projects.