In terms of use, what do AWS Lambda Layers help reduce?

AWS Lambda Layers are designed to provide a way to manage and share common code and dependencies across multiple Lambda functions, thereby reducing complexity in dependency management. When developers have multiple functions that require the same libraries or code, using Lambda Layers allows them to package these reusable components separately from the individual functions. This encapsulation helps streamline updates and maintenance since any changes to the shared components can be made in one location (the layer) rather than within each function's code.

This separation of concerns alleviates the burden of keeping track of dependencies across different functions, making it easier to ensure that each function can quickly retrieve and use the correct libraries. While layers do not inherently reduce execution time, costs, or size limitations directly, they primarily aim to simplify the overall management of dependencies, enhancing efficiency in development and deployment processes.