Set up .NET (server-side) SDK
Install the package
C#
Initialize the SDK
.NET (server-side) SDK initialization
Finding your SDK credentials
You can find your server-side SDK key, client-side ID, and mobile key in the Environments section of your Project settings. Use the overflow menu next to the environment name to copy or display the needed key.

To learn more, read Initialize the client in the .NET (server-side) SDK reference guide.