Server-Side AccelByte Foundations Integration

What is the best approach to have an authorative .NET 6.0 pure C# server-side Accelbyte Foundations integration with a read-only Unity client-side integration?

Can I just use .NET (C#) SDK Getting Started Guide | Learn more about our services and how to integrate them into your game. | AccelByte Documentation ?

I only get errors when using this with the accelbyte foundations endpoint.