Feature request: `arm64` support for Lambda Layers

[dreamorosi]

Use case

Currently our public Lambda Layers are tested and confirmed to work on Lambda x86_64 architecture. Given the performance benefits that Graviton 2 can bring in some use cases, it would be great to explore compatibility with the arm64 architecture and then eventually deploy the Layers in the regions that support it.

Solution/User Experience

Customers using arm64 should be able to use the Layers. Not sure at this stage if we need a dedicated build for that architecture or the same/current layer build would work also on ARM.

Alternative solutions

No response

Acknowledgment

• This feature request meets Lambda Powertools Tenets
• Should this be considered in other Lambda Powertools languages? i.e. Python, Java, and .NET

Future readers

Please react with 👍 and your use case to help us understand customer demand.

[codyfrisch]

This is blocking for me using the layers, unless I wanted to switch away from arm64.

[dreamorosi]

Hi @codyfrisch at the moment we don't list arm64 as compatible runtime mainly because we haven't put in place the infrastructure to run integration tests with functions using that architecture.

With that said however I can confirm that at the time of writing none of the utilities we publish uses any binaries nor architecture specific dependency.

This means that in principle it should be possible to use our Lambda layer on functions using arm64 without major issues.

However I understand the importance of having an official confirmation from our side, so we'll try to address this as soon as we can.