AWS Lambda Extensions are now Generally Available in US East (N. Virginia), EU (Ireland), and EU (Milano) regions, with more regions to come, and offer operational tools to integrate with Lambda functions, allowing them to run either in-process or in a separate process, with improved performance and the ability for extensions to return early from function invocations, reducing latency and enabling real-time data processing. However, authors must consider that they will still pay for compute time used by extensions after the function response is returned to the caller, and slow extensions can affect cold start frequency.