In the GCP Console, where do you check when users were added to Cloud Spanner IAM roles?

To see when users were added to Cloud Spanner IAM roles, you need to check the Admin Activity logs in Cloud Logging. These logs record administrative actions, including changes to IAM policies. You can filter these logs by resource type (Cloud Spanner) and event type (IAM changes) to find the specific information. Opening the Cloud Spanner console lets you manage Spanner instances but doesn't show IAM history. IAM & Admin shows current IAM policies but not a historical log of changes. Cloud Monitoring focuses on performance metrics, not administrative actions or IAM changes.