How to Share Code Between Serverless Functions
Briefly

Sharing code between serverless functions presents challenges, as changes to shared utilities require testing and redeployment of functions that depend on it. This task becomes increasingly complex as the number of functions grows.
Despite the introduction of techniques like AWS Lambda Layers for code sharing, the approaches are generally application-specific and often can't accommodate broader sharing needs, leading developers to rely on package managers like NPM.
Read at Medium
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