When you are deciding on a content migration tool to migrate data into the likes of Google Drive, SharePoint, Dropbox or even block storage you need to consider the requirements of the tools and what is actually required before you can consider migrating a single file or user. A lot of tools require you to host their software within cloud infrastructure such a GCP, or Azure which induces further costs on top of the licensing cost you're already paying for. This also adds additional support complexity and creates barriers when it comes to migrating data.
If you're looking to migrate to Google Drive, or if you are planning your migration head to Movebot and see how both the team and the tool can help you. For a detailed guide on migrating to Google Drive head to Movebot's knowledge base.