Lambda Layer Builder

ⓘ What are Lambda Layers?

AWS Lambda Layers let you package libraries, custom runtimes, and other dependencies separately from your function code. Instead of bundling everything together, you upload shared code once as a Layer and attach it to any number of functions.

This approach keeps your deployment packages small and fast, makes updates easier, and promotes code reuse across your entire serverless architecture.

• ↗ Faster deployments — upload your function code without bundling heavy dependencies every time
• ♺ Code reuse — share common libraries across multiple Lambda functions without duplication
• ⚙ Independent versioning — update your dependencies on their own schedule, separate from your business logic
• 📦 Cleaner architecture — keep your function packages lean and focused on what they actually do

Once you download the .zip, publish it as a layer: