Paul Stovell discusses the migration process for Octopus Deploy customers transitioning from version 0.9.* to 1.0, highlighting the development of a tool to import data from Microsoft SQL Server to RavenDB. This update addresses the issue faced by customers who previously couldn't upgrade due to the lack of a data migration option. Stovell provides a detailed walkthrough of the migration process, which includes backing up the SQL Server database, installing the latest Octopus Deploy server, and utilizing the Octopus Beta Migration Tool. After migration, users must update the security model by installing a new Tentacle installer and registering machine thumbprints in the Octopus web portal, thereby completing the transition to a functional 1.0 installation.