Is there a long-term support for the AWS/Unity integration?

We have a Unity app that currently uses a native web view to upload files to S3. To speed up this, we'd love to integrate the AWS SDK into Unity and do this completely natively.

What puzzles me a bit is that there's no "official AWS package" in the Unity asset store, and I can see issues here describing major problems (like not being able to run the samples in Unity 2019) which are open for almost a year (one is even since 2015).

So I am wondering if there's any kind of official (long-term) support for this integration. It won't help us if it works now, but breaks later... It is also very confusing that the link to the AWS Mobile SDK for Unity here

https://docs.aws.amazon.com/mobile-sdk/index.html

actually links to Amplify, while the other links below still refer to the Unity SDK.

The same goes for the "Download AWS SDK for Unity" download link that shows up on the "Getting Started with Cognito page" below. That link points to Amplify, but with no info whatsoever about where to get the actual SDK. This left me with the gut-feeling that the whole Unity support has been dropped with the intention to replace it by Amplify at a later point of time. Correct me if I am wrong.


On the same page, there is this link, which does not really point to Unity-specific info: