AWS Lambda environment variables use to adjust the function's behavior without updating the code. An environment variable is a pair of strings that are stored in a function's version-specific configuration. Lambda runtime makes environment variables available to our code and sets additional environment variables that contain information about the function and invocation request. Using the Environment variables file or Input Argument we can add the function Environment variables. Operation We can select the option to publish a new version, by default operation will not publish the new version. The operation will use the configured AWS cloud account to perform the operation.
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