What is the AWS Lambda extension?

A month back AWS announced a preview of Lambda Extensions, a new way to easily integrate Lambda with your favorite monitoring, observability, security, and governance tools. Extensions can be published as Lambda layers, there are two types are extension:

• Internal extensions → Run as part of the runtime process, in-process with your code. Internal extensions enable use cases such as automatically instrumenting code.
• External extensions → Allow you to run separate processes from the runtime but still within the same execution environment as the Lambda function. External extensions can start before the runtime process and can continue after the runtime shuts down. These extensions run as companion processes to Lambda functions.

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