Which tool is used for mapping legacy accounts to Google Workspace accounts during migration?

The tool used for mapping legacy accounts to Google Workspace accounts during migration is the control comma-separated values (CSV) file. This method is essential because it allows administrators to create a structured way to reference existing accounts and ensure that each legacy user is accurately matched with their new Google Workspace account.

By using a CSV file, data can be easily organized into rows and columns, allowing for batch processing of user account information. This is particularly valuable during migrations, where managing multiple users is necessary. The CSV format facilitates the inclusion of key details such as usernames, email addresses, and other attributes, enabling seamless transitions from the legacy system to Google Workspace.

While other tools mentioned, like the Google Admin Console, play significant roles in managing Google Workspace and configuring settings, they do not specifically focus on the account mapping aspect of migrations. Google Groups and Google Cloud Storage serve different functions within the workspace ecosystem, not directly related to the account migration mapping process.