This topic introduces the key terms related to Cloud Migration Hub (CMH).
resource
A resource in CMH refers to an object to be migrated to Alibaba Cloud, such as a physical server in your data center, a virtualized server, or an infrastructure resource in a third-party cloud.
migration group
A migration group in CMH refers to a group of resources that share the same business characteristics. You can define an application, a group of applications, or even a big data cluster in a business system as a migration group.
A migration group is the smallest unit for migration. CMH establishes a dashboard for each migration group to help you track the migration progress.
task
A task in CMH corresponds to a migration task in a migration tool. Data migration is not performed by CMH, but by migration tools, such as Server Migration Center (SMC) and What is DTS?. Migration tools report the status of migration tasks to CMH. CMH updates the migration progress on the dashboards of migration groups accordingly.