Migration efforts based on Azure Cloud Adoption Framework include the incremental approaches to the workloads. Each migration iteration is a batch of migration waves - the smallest workload that produces tangible results. Usually, the iteration consists of the three phases:
Assess workloads - these workloads help to evaluate costs, architecture, and deployment tools.
Deploy workloads - these workloads replicate the current functionality in a cloud using lift and shift, lift, and optimize approaches.
Release workloads - these workloads provide test, optimization, documentation, and release of the cloud migration efforts.
Reference:
https://docs.microsoft.com/en-us/azure/cloud-adoption-framework/migrate/
https://docs.microsoft.com/en-us/azure/cloud-adoption-framework/migrate/#migration-effort