(Copied from original User Voice forum)
"Separating geo from animation using alembic will allow a lighter or FX artist to more easily separate their workflow (dependency) on the geometry received from off a rig or other department. That way a lighting setup/ fur setup with different UV assignments, history, nodes connected etc, can be maintained as a separate process, while only needing to update vertex animation, versus trying to reconnect stuff to new geometry.. Cortex can do this.. Alembic should definitely do this!"