D365 CRM — Active user list — Dynamics365Athena2 user details
Symptoms
Dynamics 365 Athena2 user is shown as the most active user on the Dataverse analytics page in Power Platform Admin Center.
Cause and Resolution
Dynamics 365 Athena-CDStoAzuredatalake is a service account to perform data integration between Microsoft Dataverse to Azure Data Lake.
Most of these users are hidden from user views but they can be found by using the Advanced Find on the Users table.
You should not delete or modify these users including changing or reassigning security roles.
You will find these users with DataLakeWorkspaceAppAccess security role in every environment.
Please check the below MS Docs article to know about the System users, security roles, and their purpose:
This integration is enabled when you set up Azure Synapse Link / Application Insights and this is not turned on by default.
Azure Synapse Link for Dataverse enables you to get near real-time insights into your data in Microsoft Dataverse. With a tight seamless integration between Dataverse and Azure Synapse Analytics, Azure Synapse Link enables you to run analytics, business intelligence, and machine learning scenarios on your data.
You can read more about Azure Synapse Link using the below link
Please check the below link for the Application insight.
As for what data is being migrated from Dataverse to Azure Data Lake — this is entirely up to the setup you create with Azure Synapse Link / Application insight.
