The Deployment Manager extension product can be used to speed up the migration of data extensions and Journey Builder configurations between each environment. The Deployment Manager allows users to create packages of Marketing Cloud assets and deploy them across different business units or accounts. The Deployment Manager supports data extensions and journeys as well as other assets such as emails, templates, automations, and content blocks. Reference: https://help.salesforce.com/s/articleView?id=sf.mc_de_deployment_manager.htm&type=5