A simple and cost-effective cloud fastpath alternative is Movebot. Movebot is completely cloud hosted and managed, you can just sign up and use it, not to mention it is 70% more cost-effective than Cloud FastPath. Additionally, Movebot supports you with your migrations and offers real engineers for support and is a widely used data migration tool by service providers globally.
Another option that you have is the ability to run a preflight discovery scan across your source platform which performs a discovery scan of your source data platform and will show you any errors that may be encountered, a breakdown of the data structure and information on the content.
Movebot keeps migrations simple, whether it is, hundreds of users or thousands of users, on-premise to the cloud, or cloud to cloud. It's always simple, fast and cost-effective.