What is a Billing Source?
Billing sources are cloud accounts where billing information is made accessible to Kion. Before you attach any accounts to projects in Kion, you must add their billing sources.
For AWS, the billing source is the management account. Once Kion is installed in your environment, you need to set up the billing reports in the AWS management account so they save to an S3 bucket. You'll also need permission to apply an AWS CloudFormation template that creates a role in the AWS account to allow access to the S3 bucket as well as account creation if applicable. If Kion will not have access to the AWS account, the Kion team can provide an AWS CloudFormation template that creates an AWS Lambda function that performs the replication of the billing S3 bucket. For more information, see the AWS Management Account Setup Guide.
For Azure, you'll need to perform a few actions to grant Kion access to your resources in Azure, such as creating an App Registration for Kion in your Azure tenant, before you can add your billing source. For more information about this, reference Azure CSP Setup Guide, Azure EA Setup Guide, and Azure MCA Billing Sources which explain how to set this up.
For Google Cloud, the billing source is the billing account. You'll need to create a billing account within Google Cloud and attach it to the service account before you can add the billing source to Kion. Managing Google Cloud accounts in Kion requires both a billing account and a service account. For more information on both of these accounts, see the Google Cloud Setup Guide.