When you create a new layer, Lambda creates a new layer version with a version number of 1. Each time you publish an update to the layer, Lambda increments the version number and creates a new layer version. Every layer version is identified by a unique Amazon Resource Name (ARN). When adding a layer to the function, you must specify the exact layer version you want to use (for example, arn:aws:lambda:us-east-1:123456789012:layer:my-layer:1).

ARN: arn:aws:lambda:us-east-1:764866452798:layer:ghostscript:1 Link: shelfio/ghostscript-lambda-layer ... ARN: arn:aws:lambda:<region>:175033217214:layer:graphicsmagick:<version> Link: rpidanny/gm-lambda-layer

To find layers in your account that are compatible with your function’s runtime, use the ListLayers API. For example, you can use the following list-layers AWS Command Line Interface (CLI) command: aws lambda list-layers --compatible-runtime python3.14

September 8, 2020 - First, clone this blog post’s GitHub repo. From a terminal window, execute: git clone https://github.com/aws-samples/aws-lambda-layers-aws-sam-examples cd ./aws-sdk-layer

When specified, Lambda uses this parameter to filter layers in the Lambda console. ... Choose Create layer. Choose Upload a .zip file, and then upload the .zip archive that you created earlier. (Optional) For Compatible runtimes, choose the Python runtime that corresponds to the Python version you used to build your layer. Choose Create. ... AWS CLI command. For the --layers parameter, use the layer ARN. The ARN must specify the version (for example, arn:aws:lambda:us-east-1:123456789012:layer:my-layer:1).

July 23, 2025 - Some examples are logging frameworks, monitoring tools or utility functions. Custom Runtimes: Custom Runtimes refer to any runtime that is not natively supported by AWS Lambda but can be created and shared as a custom layer.

aws lambda publish-layer-version --layer-name my-layer --zip-file fileb://layer.zip --compatible-runtimes python3.14 · Each time that you run publish-layer-version, Lambda creates a new version of the layer. To delete a layer version, use the DeleteLayerVersion API operation. For example, run the delete-layer-version

January 12, 2026 - This example application shows how to build AWS Lambda Layers using Node.js and the AWS Serverless Application Model. Questions? @jbesw. - aws-samples/aws-lambda-layers-aws-sam-examples

When specified, Lambda uses this parameter to filter layers in the Lambda console. ... Choose Create layer. Choose Upload a .zip file, and then upload the .zip archive that you created earlier. (Optional) For Compatible runtimes, choose the Node.js runtime that corresponds to the Node.js version you used to build your layer. Choose Create. ... AWS CLI command. For the --layers parameter, use the layer ARN. The ARN must specify the version (for example, arn:aws:lambda:us-east-1:123456789012:layer:my-layer:1).

How to configure AWS Lambda layers in the Serverless Framework

June 25, 2024 - Hence my recommendation is to not ... are difficult to distribute otherwise and seldom change. Examples include the FFmpeg and Pandoc executables....

When you include a layer's logical ID in the Layers property of a Lambda function in the same AWS SAM template file, the layer is a dependency of that Lambda function. When that layer also includes a Metadata resource attribute section with a BuildMethod entry, you build the layer either by building the entire application with the sam build command or by specifying the function resource with the sam build function-logical-id command. The following example AWS SAM template builds a layer against the Python 3.12 runtime environment.

February 13, 2023 - This blog post covers AWS Lambda layers basics, the pros and cons, and my recommended best practices. My previous post provided technical details and code examples on how to build a Lambda layer with AWS CDK in Python.

June 1, 2023 - Let me explain — A Layer is a ZIP archive that contains libraries and other dependencies that you can import at runtime for your lambda functions to use. It is especially useful if you have several AWS Lambda functions that use the same set of functions or libraries — you know, code reuse :-) Since I build most of my experiments in python, I want to show you a small example ...

December 27, 2024 - AWS Lambda Layers allow developers to share common code and dependencies across multiple Lambda functions, simplifying management and reducing deployment package size. This article provides a step-by-step example of creating and using an AWS Lambda Layer, focusing on adding a shared library to multiple Lambda functions.

When specified, Lambda uses this parameter to filter layers in the Lambda console. ... Choose Create layer. Choose Upload a .zip file, and then upload the .zip archive that you created earlier. (Optional) For Compatible runtimes, choose the Java runtime that corresponds to the Java version you used to build your layer. Choose Create. ... AWS CLI command. For the --layers parameter, use the layer ARN. The ARN must specify the version (for example, arn:aws:lambda:us-east-1:123456789012:layer:my-layer:1).

June 2, 2025 - The diagram above depicts three Lambda functions A, B, and C each function containing its own business logic code.Three shared Lambda layers, Layer 1, Layer 2 and Layer 3 are mounted at /opt in function A and B execution environments whiles ...

January 27, 2026 - # Attach a single layer aws lambda update-function-configuration \ --function-name my-function \ --layers arn:aws:lambda:us-east-1:123456789012:layer:my-shared-utils:5 # Attach multiple layers (order matters - first layer is extracted first) aws lambda update-function-configuration \ --function-name my-function \ --layers \ arn:aws:lambda:us-east-1:123456789012:layer:my-shared-utils:5 \ arn:aws:lambda:us-east-1:123456789012:layer:monitoring-tools:3 # Remove all layers from a function aws lambda update-function-configuration \ --function-name my-function \ --layers [] # lambda_function.py """ Example Lambda function using code from a layer.

For each Lambda runtime, the PATH variable already includes specific folder paths within the /opt directory. To ensure that Lambda picks up your layer content, your layer .zip file should have its dependencies in one of the following folder paths: The following examples show how you can structure the folders in your layer .zip archive.

The following list-layers example displays information about layers that are compatible with the Python 3.11 runtime. aws lambda list-layers \ --compatible-runtime python3.11