Compliance is a superficial type of conformity as conforming occurs only externally not internally to the group: short term conformity
Identification is a deeper level of conformity as an individuals views change internally and externally when surround by a certain group: attempt to gain approval and to conform to expectations of the social role. Shorter term conformity as views are not present when not surrounded by the group.
Internalisation is the deepest level of conformity as it involves accepting and agreeing with a group externally and internally when you are around them or not: conformity over a longperiod of time. Generally involved renouncingpreviousbeliefs