Apps4.Pro Migration Manager uses Microsoft Graph API, REST API to perform the Stream migration.

1. Connect to the source and target tenant
2. Create user mapping between the source and target tenant
3. Get the Stream videos from the group to migrate
4. Get the meta-data of the videos alone with permissions
5. Create the group in the target tenant, if required
6. Create the videos along with all the meta-data including permissions
7. Do the steps 4 to 6 for the all the groups with videos to migrate

The entire process takes place over HTTPS connection. The data is cached in the installed machine for the migration.