Before revision:  Specifically, state-based CRDTs achieve this by sharing local state changes through shipping the entire state, that is then merged to other replicas with an idempotent, associative, and commutative join operation, ensuring convergence.This imposes a large communication overhead as the state size becomes larger.
After revision:  Specifically, state-based CRDTs achieve this by sharing local state changes through shipping the entire state, that is then merged to other replicas ; whereas operation-based CRDTs disseminate operations (i.e., small states) assuming an exactly-once reliable dissemination layer.